Towards integrated control of cereal aphids

Powell, W., Dean, G. J., Dewar, A. M. and Wilding, N. 1981. Towards integrated control of cereal aphids. Proceedings of the British Insecticide and Fungicide Conference. 11.

Related outputs

Migratory flight behaviour of the pollen beetle Meligethes aeneus

A - Papers appearing in refereed journals

Mauchline, A. L., Cook, S. M., Powell, W., Chapman, J. W. and Osborne, J. L. 2017. Migratory flight behaviour of the pollen beetle Meligethes aeneus. Pest Management Science. 73 (6), pp. 1076-1082. https://doi.org/10.1002/ps.4550

Field evaluation of synthetic aphid sex pheromone in enhancing suppression of aphid abundance by their natural enemies

A - Papers appearing in refereed journals

Nakashima, Y., Ida, T. Y., Powell, W., Pickett, J. A., Birkett, M. A., Taki, H. and Takabayashi, J. 2016. Field evaluation of synthetic aphid sex pheromone in enhancing suppression of aphid abundance by their natural enemies. BioControl. 61 (5), pp. 485-496. https://doi.org/10.1007/s10526-016-9734-3

Flight of Meligethes aeneus at a range of altitudes

C1 - Edited contributions to conferences/learned societies

Mauchline, A. L., Cook, S. M., Powell, W., Chapman, J. W. and Osborne, J. L. 2014. Flight of Meligethes aeneus at a range of altitudes. IOBC.

Effects of non-host plant odour on Melingethes aeneus during immigration to oilseed rape

A - Papers appearing in refereed journals

Mauchline, A. L., Cook, S. M., Powell, W. and Osborne, J. L. 2013. Effects of non-host plant odour on Melingethes aeneus during immigration to oilseed rape. Entomologia Experimentalis et Applicata. 146 (3), pp. 313-320. https://doi.org/10.1111/eea.12030

Odour-mediated orientation behaviour of the lily beetle Lilioceris lilii

A - Papers appearing in refereed journals

Salisbury, A., Cook, S. M., Powell, W. and Hardie, J. 2012. Odour-mediated orientation behaviour of the lily beetle Lilioceris lilii. Physiological Entomology. 37 (1), pp. 97-102. https://doi.org/10.1111/j.1365-3032.2011.00823.x

Two-step learning involved in acquiring olfactory preferences for plant volatiles by parasitic wasps

A - Papers appearing in refereed journals

Takemoto, H., Powell, W., Pickett, J. A., Kainoh, Y. and Takabayashi, J. 2012. Two-step learning involved in acquiring olfactory preferences for plant volatiles by parasitic wasps. Animal Behaviour. 83, pp. 1491-1496. https://doi.org/10.1016/j.anbehav.2012.03.023

Efficacy of thiamethoxam seed treatment against aphids and turnip yellows virus in oilseed rape

C1 - Edited contributions to conferences/learned societies

Dewar, A. M., Tait, M. F. and Stevens, M. 2011. Efficacy of thiamethoxam seed treatment against aphids and turnip yellows virus in oilseed rape. Crop protection in Southern Britain. Aspects of Applied Biology 106 . pp. 195-202

Fitness trade-off in peach-potato aphids (Myzus persicae) between insecticide resistance and vulnerability to parasitoid attack at several spatial scales

A - Papers appearing in refereed journals

Foster, S. P., Denholm, I., Poppy, G. M., Thompson, R. and Powell, W. 2011. Fitness trade-off in peach-potato aphids (Myzus persicae) between insecticide resistance and vulnerability to parasitoid attack at several spatial scales. Bulletin of Entomological Research. 101 (6), pp. 659-666. https://doi.org/10.1017/S0007485310000623

Susceptibility of six Lilium to damage by the lily beetle, Lilioceris lilii (Coleoptera: Chrysomelidae)

A - Papers appearing in refereed journals

Salisbury, A., Clark, S. J., Powell, W. and Hardie, J. 2010. Susceptibility of six Lilium to damage by the lily beetle, Lilioceris lilii (Coleoptera: Chrysomelidae). Annals of Applied Biology - AAB. 156 (1), pp. 103-110. https://doi.org/10.1111/j.1744-7348.2009.00368.x

Learning is involved in the response of parasitic wasps Aphidius ervi (Haliday) (Hymenoptera: Braconidae) to volatiles from a broad bean plant, Vicia faba (Fabaceae), infested by aphids Acyrthosiphon pisum (Harris) (Homoptera: Aphididae)

A - Papers appearing in refereed journals

Takemoto, H., Powell, W., Pickett, J. A., Kainoh, Y. and Takabayashi, J. 2009. Learning is involved in the response of parasitic wasps Aphidius ervi (Haliday) (Hymenoptera: Braconidae) to volatiles from a broad bean plant, Vicia faba (Fabaceae), infested by aphids Acyrthosiphon pisum (Harris) (Homoptera: Aphididae). Applied Entomology and Zoology. 44, pp. 23-28. https://doi.org/10.1303/aez.2009.23

Electrophysiological and behavioural responses of the pollen beetle, Meligethes aeneus , to volatiles from a non-host plant, lavender, Lavandula angustifolia (Lamiaceae)

A - Papers appearing in refereed journals

Mauchline, A. L., Birkett, M. A., Woodcock, C. M., Pickett, J. A., Osborne, J. L. and Powell, W. 2008. Electrophysiological and behavioural responses of the pollen beetle, Meligethes aeneus , to volatiles from a non-host plant, lavender, Lavandula angustifolia (Lamiaceae). Arthropod-Plant Interactions. 2, pp. 109-115. https://doi.org/10.1007/s11829-008-9038-3

Aggregation of parasitism risk in an aphid-parasitoid system: effects of plant patch size and aphid density

A - Papers appearing in refereed journals

Pareja, M., Brown, V. K. and Powell, W. 2008. Aggregation of parasitism risk in an aphid-parasitoid system: effects of plant patch size and aphid density. Basic and Applied Ecology. 9, pp. 701-708. https://doi.org/10.1016/j.baae.2007.10.008

Endoparasitism in cereal aphids: molecular analysis of a whole parasitoid community

A - Papers appearing in refereed journals

Traugott, M., Bell, J. R., Broad, G. R., Powell, W., Van Veen, F. J. F., Vollhardt, I. M. G. and Symondson, W. O. C. 2008. Endoparasitism in cereal aphids: molecular analysis of a whole parasitoid community. Molecular Ecology. 17 (17), pp. 3928-3938. https://doi.org/10.1111/j.1365-294X.2008.03878.x

The implications of genetically modified herbicide-tolerant crops for UK farmland biodiversity: a summary of the results of the Farm Scale Evaluations project

C1 - Edited contributions to conferences/learned societies

Brooks, D. R., Firbank, L. G., Bohan, D. A., Champion, G. T., Clark, S. J., Dewar, A. M., Haughton, A. J., Hawes, C., Heard, M. S., May, M. J., Osborne, J. L., Perry, J. N., Rothery, P., Roy, D. B., Scott, R. J., Squire, G. R. and Woiwod, I. P. 2007. The implications of genetically modified herbicide-tolerant crops for UK farmland biodiversity: a summary of the results of the Farm Scale Evaluations project. Proceedings Open Seminar on the Cultivation of Genetically Modified Crops and Evaluation of Ecological Effects, Tokyo, 3 November 2007 . NIAES, Tsukuba. pp. 29-52

Effect of the presence of a nonhost herbivore on the response of the aphid parasitoid Diaeretiella rapae to host-infested cabbage plants

A - Papers appearing in refereed journals

Agbogba, B. C. and Powell, W. 2007. Effect of the presence of a nonhost herbivore on the response of the aphid parasitoid Diaeretiella rapae to host-infested cabbage plants. Journal of Chemical Ecology. 33, pp. 2229-2235. https://doi.org/10.1007/s10886-007-9379-x

Foraging behaviour of the parasitoid Lysiphlebus testaceipes (Hymenoptera: Braconidae) in response to plant volatiles, with reference to biocontrol of aphids in peri-urban vegetable production systems

A - Papers appearing in refereed journals

Lopez Perez, M., Fernandez Argudin, M. and Powell, W. 2007. Foraging behaviour of the parasitoid Lysiphlebus testaceipes (Hymenoptera: Braconidae) in response to plant volatiles, with reference to biocontrol of aphids in peri-urban vegetable production systems. Biocontrol Science and Technology. 17, pp. 677-686. https://doi.org/10.1080/09583150701408949

Behavioural side-effects of insecticide resistance in aphids increase their vulnerability to parasitoid attack

A - Papers appearing in refereed journals

Foster, S. P., Tomiczek, M., Thompson, R., Denholm, I., Poppy, G. M., Kraaijeveld, A. R. and Powell, W. 2007. Behavioural side-effects of insecticide resistance in aphids increase their vulnerability to parasitoid attack. Animal Behaviour. 74 (3), pp. 621-632. https://doi.org/10.1016/j.anbehav.2006.12.018

Responses of Phradis parasitoids to volatiles of lavender, Lavendula angustifolia - a possible repellent for their host, Meligethes aeneus

A - Papers appearing in refereed journals

Cook, S. M., Jonsson, M., Skellern, M. P., Murray, D. A., Anderson, P. and Powell, W. 2007. Responses of Phradis parasitoids to volatiles of lavender, Lavendula angustifolia - a possible repellent for their host, Meligethes aeneus. BioControl. 52, pp. 591-598. https://doi.org/10.1007/s10526-006-9057-x

Pests and diseases update for 2006

G - Articles in popular magazines and other technical publications

Stevens, M., Asher, M. J. C. and Dewar, A. M. 2007. Pests and diseases update for 2006. British Sugar Beet Review. 75(1), pp. 16-20.

Response of the aphid parasitoid Aphidius funebris to volatiles from undamaged and aphid-infested Centaurea nigra

A - Papers appearing in refereed journals

Pareja, M., Moraes, M. C. B., Clark, S. J., Birkett, M. A. and Powell, W. 2007. Response of the aphid parasitoid Aphidius funebris to volatiles from undamaged and aphid-infested Centaurea nigra. Journal of Chemical Ecology. 33 (April), pp. 695-710. https://doi.org/10.1007/s10886-007-9260-y

Functional biodiversity of aphid natural enemies: positive intra-guild interactions

C1 - Edited contributions to conferences/learned societies

Powell, W., Pell, J. K., Nakashima, Y., Baverstock, J. and Birkett, M. A. 2006. Functional biodiversity of aphid natural enemies: positive intra-guild interactions.

Effects of successive seasons of genetically modified herbicide-tolerant maize cropping on weeds and invertebrates

A - Papers appearing in refereed journals

Heard, M. S., Clark, S. J., Rothery, P., Perry, J. N., Bohan, D. A., Brooks, D. R., Champion, G. T., Dewar, A. M., Hawes, C., Haughton, A. J., May, M. J., Scott, R. J., Stuart, R. S., Squire, G. R. and Firbank, L. G. 2006. Effects of successive seasons of genetically modified herbicide-tolerant maize cropping on weeds and invertebrates. Annals of Applied Biology - AAB. 149 (3), pp. 249-254. https://doi.org/10.1111/j.1744-7348.2006.00091.x

Which seed treatment? A resume of seed treatment options available to growers in 2007

G - Articles in popular magazines and other technical publications

Dewar, A. M. and Haylock, L. A. 2006. Which seed treatment? A resume of seed treatment options available to growers in 2007. British Sugar Beet Review. 74(4), pp. 6-8.

Nematodes of sugar beet part 3: stem and root-knot nematodes

G - Articles in popular magazines and other technical publications

Dewar, A. M. 2006. Nematodes of sugar beet part 3: stem and root-knot nematodes. British Sugar Beet Review. 74(2), pp. 52-54.

Chemically mediated intraguild predator avoidance by aphid parasitoids: interspecific variability in sensitivity to semiochemical trails of ladybird predators

A - Papers appearing in refereed journals

Nakashima, Y., Birkett, M. A., Pye, B. J. and Powell, W. 2006. Chemically mediated intraguild predator avoidance by aphid parasitoids: interspecific variability in sensitivity to semiochemical trails of ladybird predators. Journal of Chemical Ecology. 32, pp. 1989-1998. https://doi.org/10.1007/s10886-006-9123-y

Pests and diseases in sugar beet in 2005

G - Articles in popular magazines and other technical publications

Dewar, A. M., Asher, M. J. C., Stevens, M., Harrington, R., Parker, S., Foster, S. and Denholm, I. 2006. Pests and diseases in sugar beet in 2005. British Sugar Beet Review. 74(1), pp. 22-27.

Pests

B - Book chapters etc edited externally

Dewar, A. M. and Cooke, D. A. 2006. Pests. in: Draycott, A. P. (ed.) Sugar beet Blackwell Publishing Oxford. pp. 316-358

Effects of genetically modified herbicide-tolerant cropping systems on weed seedbanks in two years of following crops

A - Papers appearing in refereed journals

Firbank, L. G., Rothery, P., May, M. J., Clark, S. J., Scott, R. J., Stuart, R. C., Boffey, C. W. H., Brooks, D. R., Champion, G. T., Haughton, A. J., Hawes, C., Heard, M. S., Dewar, A. M., Perry, J. N. and Squire, G. R. 2006. Effects of genetically modified herbicide-tolerant cropping systems on weed seedbanks in two years of following crops. Biology Letters. 2, pp. 140-143. https://doi.org/10.1098/rsbl.2005.0390

Avoidance of intraguild predators by parasitoids: chemical mechanisms, behaviour and field evaluation

C1 - Edited contributions to conferences/learned societies

Nakashima, Y., Birkett, M. A. and Powell, W. 2005. Avoidance of intraguild predators by parasitoids: chemical mechanisms, behaviour and field evaluation. Proceedings International Symposium on Biological Control of Aphids and Coccids, Tsuruoka, Japan, 25-29 September 2005 .

Forecasting virus yellows incidence in sugar beet - the post-Gaucho era

C1 - Edited contributions to conferences/learned societies

Qi, A., Dewar, A. M. and Harrington, R. 2005. Forecasting virus yellows incidence in sugar beet - the post-Gaucho era. Production and Protection of Sugar Beet and Potatoes. Aspects of Applied Biology 76 . pp. 87-94

Can GMHT beet contribute to sustainable crop production in Europe?

A - Papers appearing in refereed journals

Pidgeon, J. D., Dewar, A. M. and May, M. J. 2005. Can GMHT beet contribute to sustainable crop production in Europe? Advances in Sugar Beet Research. 6, pp. 153-158.

Management of genetically modified herbicide-tolerant sugar beet for spring and autumn environmental benefit (Previously published in Proc. R. Soc. Lond. B (2005) 273, 111-119)

A - Papers appearing in refereed journals

May, M. J., Champion, G. T., Dewar, A. M., Qi, A. and Pidgeon, J. D. 2005. Management of genetically modified herbicide-tolerant sugar beet for spring and autumn environmental benefit (Previously published in Proc. R. Soc. Lond. B (2005) 273, 111-119). Advances in Sugar Beet Research. 6, pp. 139-152.

Compatibility of neonicotinoid seed treatments with carbamate granules in sugar beet

C1 - Edited contributions to conferences/learned societies

Haylock, L. A., Garner, B. H. and Dewar, A. M. 2005. Compatibility of neonicotinoid seed treatments with carbamate granules in sugar beet. Proceedings BCPC International Congress - Crop Science and Technology, Glasgow, 31 October-2 November 2005 . pp. 843-848

A novel approach to the use of genetically modified herbicide tolerant crops for environmental benefit (Reprinted from Proc. R. Soc. Lond. B (2003) 270, 335-340)

A - Papers appearing in refereed journals

Dewar, A. M., May, M. J., Woiwod, I. P., Haylock, L. A., Champion, G. T., Garner, B. H., Sands, R. J. N., Qi, A. and Pidgeon, J. D. 2005. A novel approach to the use of genetically modified herbicide tolerant crops for environmental benefit (Reprinted from Proc. R. Soc. Lond. B (2003) 270, 335-340). Advances in Sugar Beet Research. 6, pp. 127-138.

Interaction of neonicotinoid seed treatments with lenacil herbicide applied to sugar beet

C1 - Edited contributions to conferences/learned societies

Dewar, A. M., Haylock, L. A., Garner, B. H. and May, M. J. 2005. Interaction of neonicotinoid seed treatments with lenacil herbicide applied to sugar beet. Proceedings BCPC International Congress - Crop Science and Technology, Glasgow, 31 October-2 November 2005 . pp. 883-888

Neonicotinoid seed treatments - the panacea for most pest problems in sugar beet

C1 - Edited contributions to conferences/learned societies

Dewar, A. M., Haylock, L. A., Garner, B. H., Sands, R. J. N. and Pilbrow, J. 2005. Neonicotinoid seed treatments - the panacea for most pest problems in sugar beet. Production and Protection of Sugar Beet and Potatoes. Aspects of Applied Biology 76 . pp. 3-12

Anticipating and combating the threat of resistance to neonicotinoid insecticides in aphids

C1 - Edited contributions to conferences/learned societies

Denholm, I., Foster, S., Gorman, K. J., Cox, D., Mitchinson, S. and Dewar, A. M. 2005. Anticipating and combating the threat of resistance to neonicotinoid insecticides in aphids. Proceedings BCPC International Congress - Crop Science and Technology, Glasgow, 31 October-2 November 2005 . pp. 175-180

The UK Farm Scale Evaluations of GM crops - a post script

G - Articles in popular magazines and other technical publications

Dewar, A. M., Champion, G. T., May, M. J. and Pidgeon, J. D. 2005. The UK Farm Scale Evaluations of GM crops - a post script. Outlooks on Pest Management. 16, pp. 164-173.

The behavioural responses of the pollen beetle (Meligethes aeneus )to floral colours and odours: designing a 'push-pull' pest management strategy

C2 - Non-edited contributions to conferences

Cook, S. M., Rasmussen, H. B., Skellern, M. P., Watts, N. P., Williams, I. H. and Powell, W. 2005. The behavioural responses of the pollen beetle (Meligethes aeneus )to floral colours and odours: designing a 'push-pull' pest management strategy. Abstracts Entomology 2005, Brighton, 12-14 September 2005 . pp. 27

Pests and diseases in 2004

G - Articles in popular magazines and other technical publications

Dewar, A. M., Stevens, M. and Asher, M. J. C. 2005. Pests and diseases in 2004. British Sugar Beet Review. 73(1), pp. 2-7.

Beet cyst nematodes - a peril of the soil

G - Articles in popular magazines and other technical publications

Dewar, A. M. 2005. Beet cyst nematodes - a peril of the soil. British Sugar Beet Review. 73(2), pp. 40-46.

The effects of non-host plant essential oil volatiles on the behaviour of the pollen beetle Meligethes aeneus

A - Papers appearing in refereed journals

Mauchline, A. L., Osborne, J. L., Martin, A. P., Poppy, G. M. and Powell, W. 2005. The effects of non-host plant essential oil volatiles on the behaviour of the pollen beetle Meligethes aeneus. Entomologia Experimentalis et Applicata. 114 (3), pp. 181-188. https://doi.org/10.1111/j.1570-7458.2005.00237.x

Impacts of reducing sugar beet production on the environment on farms in eastern England

G - Articles in popular magazines and other technical publications

Jaggard, K. W. and Dewar, A. M. 2005. Impacts of reducing sugar beet production on the environment on farms in eastern England.

Effects on weed and invertebrate abundance and diversity of herbicide management in genetically modified herbicide-tolerant winter-sown oilseed rape

A - Papers appearing in refereed journals

Bohan, D. A., Boffey, C. W. H., Brooks, D. R., Clark, S. J., Dewar, A. M., Firbank, L. G., Haughton, A. J., Hawes, C., Heard, M. S., May, M. J., Osborne, J. L., Perry, J. N., Rothery, P., Roy, D. B., Scott, R. J., Squire, G. R., Woiwod, I. P. and Champion, G. T. 2005. Effects on weed and invertebrate abundance and diversity of herbicide management in genetically modified herbicide-tolerant winter-sown oilseed rape. Proceedings of the Royal Society B: Biological Sciences. 272, pp. 463-474. https://doi.org/10.1098/rspb.2004.3049

Management of genetically modified herbicide-tolerant sugar beet for spring and autumn environmental benefit

A - Papers appearing in refereed journals

May, M. J., Champion, G. T., Dewar, A. M., Qi, A. and Pidgeon, J. D. 2005. Management of genetically modified herbicide-tolerant sugar beet for spring and autumn environmental benefit. Proceedings of the Royal Society of London Series B Biological Sciences. 272, pp. 111-119.

Insect behavioural ecology and other factors affecting the control efficacy of agro-ecosystem diversification strategies

A - Papers appearing in refereed journals

Potting, R. P. J., Perry, J. N. and Powell, W. 2005. Insect behavioural ecology and other factors affecting the control efficacy of agro-ecosystem diversification strategies. Ecological Modelling. 182, pp. 199-216.

Reduced response of insecticide-resistant aphids and attraction of parasitoids to aphid alarm pheromone; a potential fitness trade-off

A - Papers appearing in refereed journals

Foster, S. P., Denholm, I., Thompson, R., Poppy, G. M. and Powell, W. 2005. Reduced response of insecticide-resistant aphids and attraction of parasitoids to aphid alarm pheromone; a potential fitness trade-off. Bulletin of Entomological Research. 95 (1), pp. 37-46. https://doi.org/10.1079/BER2004336

Nematodes in sugar beet

G - Articles in popular magazines and other technical publications

Dewar, A. M., Haylock, L. A. and Garner, B. H. 2004. Nematodes in sugar beet. British Sugar Beet Review. 72(4), pp. 9-13.

Parasitoid impact on aphid populations in UK cereal crops and attempts at manipulation

C2 - Non-edited contributions to conferences

Powell, W. 2004. Parasitoid impact on aphid populations in UK cereal crops and attempts at manipulation. Abstracts Strength in Diversity: 22nd International Congress of Entomology, Brisbane, 15-21 August 2004 .

Can GMHT beet contribute to sustainable crop production in Europe?

G - Articles in popular magazines and other technical publications

Pidgeon, J. D., Dewar, A. M. and May, M. J. 2004. Can GMHT beet contribute to sustainable crop production in Europe? International Sugar Journal. 106, pp. 542-547.

Pushing insects around: the use of 'push-pull' strategies in integrated pest management

C2 - Non-edited contributions to conferences

Cook, S. M., Powell, W., Smart, L. E., Watts, N. P. and Williams, I. H. 2004. Pushing insects around: the use of 'push-pull' strategies in integrated pest management. Abstracts Strength in Diversity: 22nd International Congress of Entomology, Brisbane, 15-21 August 2004 .

Pleiotropic effects of insecticide resistance genes in an aphid pest on vulnerability to attack by parasitoid wasps

C2 - Non-edited contributions to conferences

Foster, S. P., Denholm, I. and Powell, W. 2004. Pleiotropic effects of insecticide resistance genes in an aphid pest on vulnerability to attack by parasitoid wasps. Abstracts Strength in Diversity: 22nd International Congress of Entomology, Brisbane, 15-21 August 2004 .

The role of semiochemicals in the avoidance of the seven-spot ladybird, Coccinella septempunctata , by the aphid parasitoid, Aphidius ervi

A - Papers appearing in refereed journals

Nakashima, Y., Birkett, M. A., Pye, B. J., Pickett, J. A. and Powell, W. 2004. The role of semiochemicals in the avoidance of the seven-spot ladybird, Coccinella septempunctata , by the aphid parasitoid, Aphidius ervi. Journal of Chemical Ecology. 30, pp. 1103-1116.

Can GMHT beet contribute to sustainable crop production in Europe?

C1 - Edited contributions to conferences/learned societies

Pidgeon, J. D., Dewar, A. M. and May, M. J. 2004. Can GMHT beet contribute to sustainable crop production in Europe? Proceedings 67th IIRB Congress, Brussels, 11-12 February 2004 . pp. 107-111

Environmental impact of GM herbicide-tolerant crops: the UK Farm Scale Evaluations and proposal for mitigation

G - Articles in popular magazines and other technical publications

Dewar, A. M., May, M. J. and Pidgeon, J. D. 2004. Environmental impact of GM herbicide-tolerant crops: the UK Farm Scale Evaluations and proposal for mitigation. ISB News Report. February 2004, pp. 2-5.

Which seed treatment? An appraisal of two new insecticide treatments for sugar beet

G - Articles in popular magazines and other technical publications

Dewar, A. M., Haylock, L. A. and Garner, B. H. 2004. Which seed treatment? An appraisal of two new insecticide treatments for sugar beet. British Sugar Beet Review. 72(2), pp. 26-32.

Decision making in controlling virus yellows of sugar beet in the UK

A - Papers appearing in refereed journals

Qi, A., Dewar, A. M. and Harrington, R. 2004. Decision making in controlling virus yellows of sugar beet in the UK. Pest Management Science. 60 (7), pp. 727-732. https://doi.org/10.1002/ps.871

Genetic manipulation of natural enemies: can we improve biological control by manipulating the parasitoid and/or the plant?

B - Book chapters etc edited externally

Poppy, G. M. and Powell, W. 2004. Genetic manipulation of natural enemies: can we improve biological control by manipulating the parasitoid and/or the plant? in: Mateille, T., Ehler, L. E. and Sforza, R. (ed.) Genetics, evolution and biological control CABI International, Wallingford, Oxon (CABI). pp. 219-233

A review of pest problems in 2003: was there a sting in the tale?

G - Articles in popular magazines and other technical publications

Stevens, M. and Dewar, A. M. 2004. A review of pest problems in 2003: was there a sting in the tale? British Sugar Beet Review. 72(1), pp. 12-17.

Feeding responses of carabid beetles to dimethoate- contaminated prey

A - Papers appearing in refereed journals

Mauchline, A. L., Osborne, J. L. and Powell, W. 2004. Feeding responses of carabid beetles to dimethoate- contaminated prey. Agricultural and Forest Entomology. 6 (2), pp. 99-104. https://doi.org/10.1111/j.1461-9563.2004.00208.x

Wielding the MACE: recent events regarding resistance and the peach potato aphid, Myzus persicae

G - Articles in popular magazines and other technical publications

Waters, J. W., Denholm, I., Harrington, R., Foster, S. P., Parker, S. J. and Dewar, A. M. 2004. Wielding the MACE: recent events regarding resistance and the peach potato aphid, Myzus persicae. British Sugar Beet Review. 72(1), pp. 28-32.

Environmentally-friendly crop protection in GM herbicide-tolerant sugar beet

C1 - Edited contributions to conferences/learned societies

Dewar, A. M., Haylock, L. A., Garner, B. H., Sands, R. J. N. and May, M. J. 2003. Environmentally-friendly crop protection in GM herbicide-tolerant sugar beet. Proceedings 7th ICABR International Conference on Public Goods and Public Policy for Agricultural Biotechnology, Ravello, 29 June-3 July 2003 .

Using field margin diversification in agri-environment schemes to enhance aphid natural enemies

C1 - Edited contributions to conferences/learned societies

Powell, W., Walters, K., A'hara, S., Ashby, J., Stevenson, H. and Northing, P. 2003. Using field margin diversification in agri-environment schemes to enhance aphid natural enemies.

Determination of plant foraging preferences in the aphid parasitoid Aphidius colemani : emergence conditioning, learning and memory

C2 - Non-edited contributions to conferences

Powell, W., Storeck, A., Poppy, G. M. and Van Emden, H. 2003. Determination of plant foraging preferences in the aphid parasitoid Aphidius colemani : emergence conditioning, learning and memory. Oxford Univ Press Inc.

Avoidance of intraguild predators by parasitoids: chemically mediated behavioural mechanisms and field evaluation

C2 - Non-edited contributions to conferences

Nakashima, Y., Birkett, M. A. and Powell, W. 2003. Avoidance of intraguild predators by parasitoids: chemically mediated behavioural mechanisms and field evaluation. Oxford University Press (OUP) Oxford. https://doi.org/10.1093/jis/3.1.33

GM management for environmental benefit

C1 - Edited contributions to conferences/learned societies

Pidgeon, J. D., May, M. J. and Dewar, A. M. 2003. GM management for environmental benefit. Proceedings 7th ICABR International Conference on Public Goods and Public Policy for Agricultural Biotechnology, Ravello, 29 June-3 July 2003 .

Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 1 April 2003

D1 - Technical reports: non-confidential

Firbank, L. G., Brooks, D., Bohan, D. A., Champion, G. T., Clark, S. J., Daniels, R., Dewar, A. M., Fairfax, C., Haughton, A. J., Hawes, C., Heard, M., Hill, M., May, M. J., Osborne, J. L., Pidgeon, J. D., Perry, J. N., Rossall, M., Rothery, P., Roy, D., Scott, R., Squire, G., Whittaker, D. and Woiwod, I. P. 2003. Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 1 April 2003.

Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 1 November 2003

D1 - Technical reports: non-confidential

Firbank, L. G., Brooks, D., Bohan, D. A., Champion, G. T., Clark, S. J., Daniels, R., Dewar, A. M., Haughton, A. J., Hawes, C., Heard, M., Hill, M., May, M. J., Osborne, J. L., Pidgeon, J. D., Perry, J. N., Rothery, P., Roy, D., Scott, R., Squire, G. and Woiwod, I. P. 2003. Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 1 November 2003.

Life without Temik: the final days

G - Articles in popular magazines and other technical publications

Dewar, A. M. 2003. Life without Temik: the final days. British Sugar Beet Review. 71(4), pp. 34-35.

The Farm Scale Evaluations of GMHT crops: what do the results mean for sugar beet?

G - Articles in popular magazines and other technical publications

Dewar, A. M., Champion, G. T., May, M. J. and Pidgeon, J. D. 2003. The Farm Scale Evaluations of GMHT crops: what do the results mean for sugar beet? Britsh Sugar Beet Review. 71(4), pp. 15-22.

The implications of spring-sown genetically modified herbicide-tolerant crops for farmland biodiversity: a commentary on the Farm Scale Evaluations of spring sown crops (DEFRA report)

D1 - Technical reports: non-confidential

Firbank, L. G., Perry, J. N., Squire, G. R., Bohan, D. A., Brooks, D. R., Champion, G. T., Clark, S. J., Daniels, R. E., Dewar, A. M., Haughton, A. J., Hawes, C., Heard, M. S., Hill, M. O., May, M. J., Osborne, J. L., Rothery, P., Roy, D. B., Scott, R. J. and Woiwod, I. P. 2003. The implications of spring-sown genetically modified herbicide-tolerant crops for farmland biodiversity: a commentary on the Farm Scale Evaluations of spring sown crops (DEFRA report).

Responses of plants and invertebrate trophic groups to contrasting herbicide regimes in the Farm Scale Evaluations of genetically modified herbicide-tolerant crops

A - Papers appearing in refereed journals

Hawes, C., Haughton, A. J., Osborne, J. L., Roy, D. B., Clark, S. J., Perry, J. N., Rothery, P., Bohan, D. A., Brooks, D. R., Champion, G. T., Dewar, A. M., Heard, M. S., Woiwod, I. P., Daniels, R. E., Young, M. W., Parish, A. M., Scott, R. J., Firbank, L. G. and Squire, G. R. 2003. Responses of plants and invertebrate trophic groups to contrasting herbicide regimes in the Farm Scale Evaluations of genetically modified herbicide-tolerant crops. Philosophical Transactions of the Royal Society B-Biological Sciences. 358, pp. 1899-1913. https://doi.org/10.1098/rstb.2003.1406

Invertebrate responses to the management of genetically modified herbicide-tolerant and conventional spring crops. II. Within-field epigeal and aerial arthropods

A - Papers appearing in refereed journals

Haughton, A. J., Champion, G. T., Hawes, C., Heard, M. S., Brooks, D. R., Bohan, D. A., Clark, S. J., Dewar, A. M., Firbank, L. G., Osborne, J. L., Perry, J. N., Rothery, P., Roy, D. B., Scott, R. J., Woiwod, I. P., Birchall, C., Skellern, M. P., Walker, J. H., Baker, P., Browne, E. L., Dewar, A. J. G., Garner, B. H., Haylock, L. A., Horne, S. L., Mason, N. S., Sands, R. J. N. and Walker, M. J. 2003. Invertebrate responses to the management of genetically modified herbicide-tolerant and conventional spring crops. II. Within-field epigeal and aerial arthropods. Philosophical Transactions of the Royal Society B-Biological Sciences. 358, pp. 1863-1877.

Invertebrate responses to the management of genetically modified herbicide-tolerant and conventional spring crops. I. Soil-surface-active invertebrates

A - Papers appearing in refereed journals

Brooks, D. R., Bohan, D. A., Champion, G. T., Haughton, A. J., Hawes, C., Heard, M. S., Clark, S. J., Dewar, A. M., Firbank, L. G., Perry, J. N., Rothery, P., Scott, R. J., Woiwod, I. P., Birchall, C., Skellern, M. P., Walker, J. H., Baker, P., Bell, D., Browne, E. L., Dewar, A. J. G., Fairfax, C. M., Garner, B. H., Haylock, L. A., Horne, S. L., Hulmes, S. E., Mason, N. S., Norton, L. R., Nuttall, P., Sands, R. J. N. and Walker, M. J. 2003. Invertebrate responses to the management of genetically modified herbicide-tolerant and conventional spring crops. I. Soil-surface-active invertebrates. Philosophical Transactions of the Royal Society B-Biological Sciences. 358, pp. 1847-1862. https://doi.org/10.1098/rstb.2003.1407

Might mite be a future sugar beet problem?

G - Articles in popular magazines and other technical publications

Haylock, L. A. and Dewar, A. M. 2003. Might mite be a future sugar beet problem? British Sugar Beet Review. 71(3), pp. 20-25.

Review of pests of sugar beet in 2002

G - Articles in popular magazines and other technical publications

Dewar, A. M. and Stevens, M. 2003. Review of pests of sugar beet in 2002. British Sugar Beet Review. 71(1), pp. 34-37.

A novel approach to the use of genetically modified herbicide tolerant crops for environmental benefit

A - Papers appearing in refereed journals

Dewar, A. M., May, M. J., Woiwod, I. P., Haylock, L. A., Champion, G. T., Garner, B. H., Sands, R. J. N., Qi, A. and Pidgeon, J. D. 2003. A novel approach to the use of genetically modified herbicide tolerant crops for environmental benefit. Proceedings of the Royal Society of London Series B Biological Sciences. 270, pp. 335-340.

The effect of clothianidin on aphids and virus yellows in sugar beet

G - Articles in popular magazines and other technical publications

Dewar, A. M., Haylock, L. A., Garner, B. H., Baker, P., Sands, R. J. N., Foster, S. P., Cox, D., Mason, N. and Denholm, I. 2003. The effect of clothianidin on aphids and virus yellows in sugar beet. Pflanzenschutz-Nachrichten Bayer. 56, pp. 127-146.

Effects of delayed weed control in genetically modified herbicide-tolerant sugar beet on the abundance and diversity of arthropods

C1 - Edited contributions to conferences/learned societies

Dewar, A. M., Haylock, L. A., Baker, P., Garner, B. H., Sands, R. J. N. and Woiwod, I. P. 2003. Effects of delayed weed control in genetically modified herbicide-tolerant sugar beet on the abundance and diversity of arthropods. Proceedings 1st Joint IIRB-ASSBT Congress, San Antonio, 26 February-1 March 2003 . pp. 387-398

Neonicotinoid seed treatments to control aphids and virus yellows in sugar beet

C1 - Edited contributions to conferences/learned societies

Dewar, A. M., Haylock, L. A., Garner, B. H., Baker, P. and Sands, R. J. N. 2003. Neonicotinoid seed treatments to control aphids and virus yellows in sugar beet. Proceedings 1st Joint IIRB-ASSBT Congress, San Antonio, 26 February-1 March 2003 . pp. 799-803

Trapped in 2002

G - Articles in popular magazines and other technical publications

Harrington, R., Parker, S. J., Taylor, M. S., Adamowicz, T., Cox, D. M., Foster, S. P., Denholm, I., Dewar, A. M. and Pickup, J. 2003. Trapped in 2002. British Sugar Beet Review. 71(1), pp. 12-17.

An introduction to the farm-scale evaluations of genetically modified herbicide-tolerant crops

A - Papers appearing in refereed journals

Firbank, L. G., Heard, M. S., Woiwod, I. P., Hawes, C., Haughton, A. J., Champion, G. T., Scott, R. J., Hill, M. O., Dewar, A. M., Squires, G. R., May, M. J., Brooks, D. R., Bohan, D. A., Daniels, R. E., Osborne, J. L., Roy, D. B., Black, H. I. J., Rothery, P. and Perry, J. N. 2003. An introduction to the farm-scale evaluations of genetically modified herbicide-tolerant crops. Journal of Applied Ecology. 40 (1), pp. 2-16. https://doi.org/10.1046/j.1365-2664.2003.00787.x

Manipulation of parasitoids for aphid pest management: progress and prospects

A - Papers appearing in refereed journals

Powell, W. and Pickett, J. A. 2003. Manipulation of parasitoids for aphid pest management: progress and prospects. Pest Management Science. 59 (2), pp. 149-155. https://doi.org/10.1002/ps.550

Management of GM herbicide-tolerant sugar beet for potential environmental benefit to farmland birds

G - Articles in popular magazines and other technical publications

Dewar, A. M., May, M. J. and Pidgeon, J. D. 2002. Management of GM herbicide-tolerant sugar beet for potential environmental benefit to farmland birds. Institute Of Arable Crops Research Annual Report. 2001-2002, pp. 44-47.

Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 27 March 2002

D1 - Technical reports: non-confidential

Firbank, L. G., Bennett, S., Brooks, D., Bohan, D. A., Champion, G. T., Clark, S. J., Daniels, R., Dewar, A. M., Haughton, A. J., Hawes, C., Heard, M., Hill, M., May, M. J., Norton, L., Osborne, J. L., Pidgeon, J. D., Perry, J. N., Rothery, P., Roy, D., Scott, R., Squire, G., Watkins, J., Whittaker, D. and Woiwod, I. P. 2002. Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 27 March 2002.

Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 1 November 2002

D1 - Technical reports: non-confidential

Firbank, L. G., Brooks, D., Bohan, D. A., Champion, G. T., Clark, S. J., Daniels, R., Dewar, A. M., Fairfax, C., Haughton, A. J., Hawes, C., Heard, M., Hill, M., May, M. J., Osborne, J. L., Pidgeon, J. D., Perry, J. N., Rossall, M., Rothery, P., Roy, D., Scott, R., Squire, G., Whittaker, D. and Woiwod, I. P. 2002. Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 1 November 2002.

Plant-to-plant communication mediating in-flight orientation of Aphidius ervi

A - Papers appearing in refereed journals

Guerrieri, E., Poppy, G. M., Powell, W., Rao, R. and Pennacchio, F. 2002. Plant-to-plant communication mediating in-flight orientation of Aphidius ervi. Journal of Chemical Ecology. 28, pp. 1703-1715.

Pests and diseases update in Europe - a report from the IIRB study group meeting in France

G - Articles in popular magazines and other technical publications

Stevens, M., Francis, S. A., Asher, M. J. C. and Dewar, A. M. 2002. Pests and diseases update in Europe - a report from the IIRB study group meeting in France. British Sugar Beet Review. 70(4), pp. 10-13.

Possibilities and constraints of agro-ecosystem diversification as a pest management strategy: a simulation approach

C1 - Edited contributions to conferences/learned societies

Potting, R. P. J., Perry, J. N. and Powell, W. 2002. Possibilities and constraints of agro-ecosystem diversification as a pest management strategy: a simulation approach. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 2002 . pp. 91-96

The effect of late weed control in GM herbicide-tolerant sugar beet on the biodiversity of arthropods

C2 - Non-edited contributions to conferences

Dewar, A. M., Haylock, L. A., Garner, B. H., Sands, R. J. N., Baker, P. M. and May, M. J. 2002. The effect of late weed control in GM herbicide-tolerant sugar beet on the biodiversity of arthropods. Proceedings 12th European Weed Research Society Symposium, Wageningen, 24-27 June 2002 . pp. 100-101

The effect of clothianidin on aphids and virus yellows in sugar beet

C1 - Edited contributions to conferences/learned societies

Dewar, A. M., Haylock, L. A., Garner, B. H., Baker, P. M. and Sands, R. J. N. 2002. The effect of clothianidin on aphids and virus yellows in sugar beet. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 2002 . pp. 647-652

The effects of insecticide seed treatments on beneficial invertebrates in sugar beet

C1 - Edited contributions to conferences/learned societies

Baker, P. M., Haylock, L. A., Garner, B. H., Sands, R. J. N. and Dewar, A. M. 2002. The effects of insecticide seed treatments on beneficial invertebrates in sugar beet. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 2002 . pp. 653-658

Sub-lethal effects of the insecticides pirimicarb and dimethoate on the aphid parasitoid Diaeretiella rapae (Hymenoptera: Braconidae) when attacking and developing in insecticide-resistant hosts

A - Papers appearing in refereed journals

Umoru, P. A. and Powell, W. 2002. Sub-lethal effects of the insecticides pirimicarb and dimethoate on the aphid parasitoid Diaeretiella rapae (Hymenoptera: Braconidae) when attacking and developing in insecticide-resistant hosts. Biocontrol Science and Technology. 12, pp. 605-614.

Parasitoid interactions between crop and margin habitat

C2 - Non-edited contributions to conferences

Powell, W. 2002. Parasitoid interactions between crop and margin habitat. Abstracts 7th European Congress of Entomology, Thessaloniki, 7-13 October 2002 . pp. 61

The effect of dose rate of imidacloprid and clothianidin on insecticide-resistant clones of Myzus persicae (Sulzer)

C1 - Edited contributions to conferences/learned societies

Haylock, L. A., Dewar, A. M., Garner, B. H., Sands, R. J. N., Baker, P., Foster, S. P., Cox, D., Mason, N. and Denholm, I. 2002. The effect of dose rate of imidacloprid and clothianidin on insecticide-resistant clones of Myzus persicae (Sulzer). Proceedings Brighton Crop Protection Conference - Pests and Diseases, 2002 . pp. 805-810

All you ever wanted to know about aphids in sugar beet, but were afraid to ask

G - Articles in popular magazines and other technical publications

Haylock, L. A. and Dewar, A. M. 2002. All you ever wanted to know about aphids in sugar beet, but were afraid to ask. British Sugar Beet Review. 70(2), pp. 44-48.

Identification of non-host plant volatiles repellent to pollen beetles

C2 - Non-edited contributions to conferences

Stevenson, A. L., Birkett, M. A., Woodcock, C. M., Pickett, J. A., Osborne, J. L. and Powell, W. 2002. Identification of non-host plant volatiles repellent to pollen beetles. Abstracts 19th Annual Meeting of the International Society of Chemical Ecology, Hamburg, 3-8 August 2002 .

Temporal and spatial dynamics of insecticide resistance in Myzus persicae (Hemiptera: Aphididae)

A - Papers appearing in refereed journals

Foster, S. P., Harrington, R., Dewar, A. M., Denholm, I. and Devonshire, A. L. 2002. Temporal and spatial dynamics of insecticide resistance in Myzus persicae (Hemiptera: Aphididae). Pest Management Science. 58, pp. 895-907.

Why worry about insecticide-resistant aphids?

G - Articles in popular magazines and other technical publications

Foster, S. P., Denholm, I., Harrington, R. and Dewar, A. M. 2002. Why worry about insecticide-resistant aphids? British Sugar Beet Review. 70(2), pp. 20-29.

Pests of sugar beet in 2001

G - Articles in popular magazines and other technical publications

Dewar, A. M. and Stevens, M. 2002. Pests of sugar beet in 2001. British Sugar Beet Review. 70(1), pp. 12-17.

Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 31 January 2001

D1 - Technical reports: non-confidential

Firbank, L. G., Bater, J., Bennett, S., Brooks, D., Bohan, D. A., Champion, G. T., Clark, S. J., Daniels, R., Dewar, A. M., Haughton, A. J., Hawes, C., Heard, M., Hill, M., May, M. J., Norton, L., Osborne, J. L., Pidgeon, J. D., Perry, J. N., Rossall, M., Rothery, P., Roy, D., Scott, R., Squire, G., Watkins, J., Whittaker, D. and Woiwod, I. P. 2001. Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 31 January 2001.

Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 11 October 2001

D1 - Technical reports: non-confidential

Firbank, L. G., Bennett, S., Brooks, D., Bohan, D. A., Champion, G. T., Clark, S. J., Daniels, R., Dewar, A. M., Haughton, A. J., Hawes, C., Heard, M., Hill, M., May, M. J., Norton, L., Osborne, J. L., Pidgeon, J. D., Perry, J. N., Rothery, P., Roy, D., Scott, R., Squire, G., Watkins, J., Whittaker, D. and Woiwod, I. P. 2001. Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 11 October 2001.

Weed management for agricultural and environmental benefit in GMHT sugar beet

C1 - Edited contributions to conferences/learned societies

Pidgeon, J. D., Dewar, A. M. and May, M. J. 2001. Weed management for agricultural and environmental benefit in GMHT sugar beet. Proceedings Brighton Crop Protection Conference - Weeds, 2001 . pp. 373-380

Results of IIRB co-operative trials with insecticides in pelleted seed

C1 - Edited contributions to conferences/learned societies

Hermann, O., Wauters, A. and Dewar, A. M. 2001. Results of IIRB co-operative trials with insecticides in pelleted seed. Proceedings 64th IIRB Congress, Bruges, June 2001 . pp. 341-346

Novel seed treatments to control aphids and virus yellows in sugar beet

C1 - Edited contributions to conferences/learned societies

Dewar, A. M., Haylock, L. A., Bean, K. M., Garner, B. H., Sands, R. J. N. and Ecclestone, P. M. J. 2001. Novel seed treatments to control aphids and virus yellows in sugar beet. Seed Treatment: Challenges and Opportunities. BCPC Symposium Proceedings No. 76 . British Crop Protection Council (BCPC). pp. 33-40

Control of volunteer potatoes in GM herbicide-tolerant sugar beet and the consequences for populations of potato cyst nematodes

G - Articles in popular magazines and other technical publications

Dewar, A. M., Haylock, L. A., May, M. J., Beane, J. and Perry, R. N. 2001. Control of volunteer potatoes in GM herbicide-tolerant sugar beet and the consequences for populations of potato cyst nematodes. British Sugar Beet Review. 69(4), pp. 19-23.

Gaucho seed treatment - the English experience

G - Articles in popular magazines and other technical publications

Dewar, A. M. 2001. Gaucho seed treatment - the English experience. Tillage Farmer. 8(5), p. 8, 10, 21.

Spatial and temporal dynamics of insecticide resistance in Myzus persicae

C2 - Non-edited contributions to conferences

Foster, S. P., Harrington, R., Dewar, A. M. and Denholm, I. 2001. Spatial and temporal dynamics of insecticide resistance in Myzus persicae. Abstracts Resistance 2001, Harpenden, 24-26 September 2001 .

GMHT sugar beet - win:win scenarios for agricultural (sic) and the environment

C2 - Non-edited contributions to conferences

May, M. J., Dewar, A. M. and Pidgeon, J. D. 2001. GMHT sugar beet - win:win scenarios for agricultural (sic) and the environment. Posters Conference on Seeds of Opportunity: the Role of Biotechnology in Agriculture, London, 31 May-1 June 2001 .

Pests and diseases in the USA

G - Articles in popular magazines and other technical publications

Dewar, A. M., Francis, S. A., Asher, M. J. C. and Stevens, M. 2001. Pests and diseases in the USA. British Sugar Beet Review. 69(1), pp. 10-14.

Virus yellows forecasting in sugar beet and the impact of Gaucho

G - Articles in popular magazines and other technical publications

Qi, A., Dewar, A. M., Werker, A. R. and Harrington, R. 2001. Virus yellows forecasting in sugar beet and the impact of Gaucho. British Sugar Beet Review. 69 (1), pp. 36-39.

Wireworms and leatherjackets - the thugs of the soil environment

G - Articles in popular magazines and other technical publications

Dewar, A. M., Haylock, L. A. and Ecclestone, P. M. 2001. Wireworms and leatherjackets - the thugs of the soil environment. British Sugar Beet Review. 69(1), pp. 31-33.

Pests and diseases of sugar beet in 2000

G - Articles in popular magazines and other technical publications

Asher, M. J. C. and Dewar, A. M. 2001. Pests and diseases of sugar beet in 2000. British Sugar Beet Review. 69(1), pp. 21-25.

Can aphid-induced plant signals be transmitted aerially and through the rhizosphere?

A - Papers appearing in refereed journals

Chamberlain, K., Guerrieri, E., Pennacchio, F., Pettersson, J., Pickett, J. A., Poppy, G. M., Powell, W., Wadhams, L. J. and Woodcock, C. M. 2001. Can aphid-induced plant signals be transmitted aerially and through the rhizosphere? Biochemical Systematics And Ecology. 29, pp. 1063-1074.

Comparison of two field-scale approaches for the study of effects of insecticides on polyphagous predators in cereals

A - Papers appearing in refereed journals

Kennedy, P. J., Conrad, K. F., Perry, J. N., Powell, D., Aegerter, J., Todd, A. D., Walters, K. F. A. and Powell, W. 2001. Comparison of two field-scale approaches for the study of effects of insecticides on polyphagous predators in cereals. Applied Soil Ecology. 17 (3), pp. 253-266. https://doi.org/10.1016/S0929-1393(01)00142-1

Glyphosate applied to volunteer potatoes in GM herbicide- tolerant sugar beet reduces populations of potato cyst nematodes

C2 - Non-edited contributions to conferences

Dewar, A. M., Haylock, L. A., May, M. J., Beane, J. and Perry, R. N. 2001. Glyphosate applied to volunteer potatoes in GM herbicide- tolerant sugar beet reduces populations of potato cyst nematodes. Abstracts 53rd International Symposium on Crop Protection, Ghent, 8 May 2001 . pp. 157

Repellency of non-host plants to oilseed rape pests

C2 - Non-edited contributions to conferences

Stevenson, A. L., Osborne, J. L. and Powell, W. 2001. Repellency of non-host plants to oilseed rape pests. Abstracts British Ecological Society Winter Meeting, Birmingham, 3-5 January 2001 . pp. 56

Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 20 October 2000

D1 - Technical reports: non-confidential

Firbank, L. G., Bater, J., Bennett, S., Brooks, D., Bohan, D. A., Champion, G. T., Clark, S. J., Daniels, R., Dewar, A. M., Glen, D. M., Haughton, A. J., Hawes, C., Heard, M., Hill, M., Maudsley, M. J., Marshall, E. J. P., May, M. J., Norton, L., Osborne, J. L., Pidgeon, J. D., Perry, J. N., Rossall, M., Rothery, P., Roy, D., Scott, R., Squire, G., Watkins, J., Whittaker, D. and Woiwod, I. P. 2000. Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 20 October 2000. Department for Environment, Food & Rural Affairs (DEFRA).

Herbicide tolerant crops

G - Articles in popular magazines and other technical publications

May, M. J., Dewar, A. M. and Pidgeon, J. D. 2000. Herbicide tolerant crops.

A simple sequence repeat-based linkage map of barley

A - Papers appearing in refereed journals

Ramsay, L., Macaulay, M., Degli Ivanissevich, S., Maclean, K., Cardle, L., Fuller, J., Edwards, K. J., Tuvesson, S., Morgante, M., Massari, A., Maestri, E., Marmiroli, N., Sjakste, T., Ganal, M., Powell, W. and Waugh, R. 2000. A simple sequence repeat-based linkage map of barley. Genetics. 156, pp. 1997-2005.

Late control of weeds in GM herbicide-tolerant sugarbeet to reduce aphid attack

G - Articles in popular magazines and other technical publications

Dewar, A. M. 2000. Late control of weeds in GM herbicide-tolerant sugarbeet to reduce aphid attack. Antenna - Bulletin of the Royal Entomological Society. 24, pp. 69-70.

The use of field margins in the manipulation of parasitoids for aphid control in arable crops

C1 - Edited contributions to conferences/learned societies

Powell, W. 2000. The use of field margins in the manipulation of parasitoids for aphid control in arable crops. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 2000 . pp. 579-584

Aphid-induced plant volatiles influencing parasitoid behaviour

C2 - Non-edited contributions to conferences

Poppy, G. M., Powell, W., Guerrieri, E. and Pennacchio, F. 2000. Aphid-induced plant volatiles influencing parasitoid behaviour. Abstract Book 1: 21st International Congress of Entomology, Foz do Iguassu, Brazil, 20-26 August 2000 .

Host selection strategies by the aphid parasitoid Aphidius ervi

C2 - Non-edited contributions to conferences

Pennacchio, F., Battaglia, D., Guerrieri, E., Poppy, G. M., Powell, W., Romano, A. and Tranfaglia, A. 2000. Host selection strategies by the aphid parasitoid Aphidius ervi. Abstracts Book 1: 21st International Congress of Entomology, Foz do Iguassu, Brazil, 20-26 August 2000 .

Principles for regulatory testing and interpretation of semi-field and field studies with non-target arthropods

A - Papers appearing in refereed journals

Candolfi, M., Bigler, F., Campbell, P., Heimbach, U., Schmuck, R., Angeli, G., Bakker, F., Brown, K., Carli, G., Dinter, A., Forti, D., Forster, R., Gathmann, A., Hassan, S., Mead-Briggs, M., Melandri, M., Neuwmann, P., Pasqualini, E., Powell, W., Reboulet, J-N., Romijn, K., Sechser, B., Thieme, Ufer, A., Vergnet, Ch. and Vogt, H. 2000. Principles for regulatory testing and interpretation of semi-field and field studies with non-target arthropods. Anzeiger fur Schadlingskunde/Journal of Pest Science. 73 (6), pp. 141-147.

The ecology and control of the two-spotted spider mite, Tetranychus urticae in sugar beet

C1 - Edited contributions to conferences/learned societies

Dewar, A. M., Haylock, L. A., Bean, K. M., Garner, B. H. and Boyce, R. 2000. The ecology and control of the two-spotted spider mite, Tetranychus urticae in sugar beet. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 2000 . pp. 913-918

Novel seed treatments to control soil pests of sugar beet

C1 - Edited contributions to conferences/learned societies

Dewar, A. M., Haylock, L. A., Bean, K. M. and Ecclestone, P. M. J. 2000. Novel seed treatments to control soil pests of sugar beet. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 2000 . pp. 907-912

Understanding the soil pest complex

G - Articles in popular magazines and other technical publications

Dewar, A. M. 2000. Understanding the soil pest complex. British Sugar Beet Review. 68(4), pp. 11-14.

Movement of aphid parasitoids over different spatial scales studied using molecular markers

C2 - Non-edited contributions to conferences

Loxdale, H. D., Brookes, C. P. and Powell, W. 2000. Movement of aphid parasitoids over different spatial scales studied using molecular markers. Abstracts 21st International Congress of Entomology, Foz de Iguassu, Brazil, 20-26 August 2000 . pp. 2

Fitting host-parasitoid models with CV2>1 using hierarchical generalized linear models

A - Papers appearing in refereed journals

Perry, J. N., Noh, M. S., Lee, Youngsook, Alston, R. D., Mohd Norowi, H., Powell, W. and Rennolls, K. 2000. Fitting host-parasitoid models with CV2>1 using hierarchical generalized linear models. Proceedings of the Royal Society of London Series B Biological Sciences. 267, pp. 2043-2048.

Use of transgenic glyphosate-tolerance in sugar beet to control aphids and potato cyst nematodes

C1 - Edited contributions to conferences/learned societies

Dewar, A. M., Haylock, L. A., Bean, K. M., May, M. J., Beane, J. and Perry, R. N. 2000. Use of transgenic glyphosate-tolerance in sugar beet to control aphids and potato cyst nematodes. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 2000 . pp. 1229-1236

Farm-scale trials for studying the effects of GM herbicide-tolerant crops on farmland biodiversity in the UK

G - Articles in popular magazines and other technical publications

Woiwod, I. P., Dewar, A. M., Hawes, C. and Heard, M. 2000. Farm-scale trials for studying the effects of GM herbicide-tolerant crops on farmland biodiversity in the UK. Antenna - Bulletin of the Royal Entomological Society. 24, pp. 66-68.

Physical and chemical cues influencing the oviposition behaviour of Aphidius ervi

A - Papers appearing in refereed journals

Battaglia, D., Poppy, G. M., Powell, W., Romano, A., Tranfaglia, A. and Pennacchio, F. 2000. Physical and chemical cues influencing the oviposition behaviour of Aphidius ervi. Entomologia Experimentalis et Applicata. 94 (3), pp. 219-227. https://doi.org/10.1046/j.1570-7458.2000.00623.x

Alate production by aphids on sugar beet: how likely is the evolution of sugar beet-specific biotypes?

A - Papers appearing in refereed journals

Williams, I. S., Dewar, A. M., Dixon, A. F. G. and Thornhill, W. A. 2000. Alate production by aphids on sugar beet: how likely is the evolution of sugar beet-specific biotypes? Journal of Applied Ecology. 37 (1), pp. 40-51. https://doi.org/10.1046/j.1365-2664.2000.00465.x

Glyphosate applied to genetically modified herbicide-tolerant sugar beet and 'volunteer' potatoes reduces populations of potato cyst nematodes and the number and size of daughter tubers

A - Papers appearing in refereed journals

Dewar, A. M., Haylock, L. A., May, M. J., Beane, J. and Perry, R. N. 2000. Glyphosate applied to genetically modified herbicide-tolerant sugar beet and 'volunteer' potatoes reduces populations of potato cyst nematodes and the number and size of daughter tubers. Annals of Applied Biology - AAB. 136, pp. 179-187.

Delayed control of weeds in glyphosate-tolerant sugar beet and the consequences on aphid infestation and yield

A - Papers appearing in refereed journals

Dewar, A. M., Haylock, L. A., Bean, K. M. and May, M. J. 2000. Delayed control of weeds in glyphosate-tolerant sugar beet and the consequences on aphid infestation and yield. Pest Management Science. 56 (4), pp. 345-350. https://doi.org/10.1002/(SICI)1526-4998(200004)56:4<345::AID-PS126>3.3.CO;2-P

GM sugar beet - the present situation

G - Articles in popular magazines and other technical publications

Dewar, A. M., May, M. J. and Pidgeon, J. D. 2000. GM sugar beet - the present situation. British Sugar Beet Review. 68(2), pp. 22-27.

Pests and diseases in sugar beet: a review of 1999

G - Articles in popular magazines and other technical publications

Dewar, A. M. and Asher, M. J. C. 2000. Pests and diseases in sugar beet: a review of 1999. British Sugar Beet Review. 68(1), pp. 11-17.

Control of pests by manipulation of weeds in GM herbicide-tolerant sugar beet

C1 - Edited contributions to conferences/learned societies

Dewar, A. M. 2000. Control of pests by manipulation of weeds in GM herbicide-tolerant sugar beet. Proceedings 63rd Congress of the Institut International de Recherches Betteravieres, Interlaken, February 2000 . pp. 187-198

The role of plant chemical cues in determining host preference in the generalist aphid parasitoid Aphidius colemani

A - Papers appearing in refereed journals

Storeck, A., Poppy, G. M., Van Emden, H. F. and Powell, W. 2000. The role of plant chemical cues in determining host preference in the generalist aphid parasitoid Aphidius colemani. Entomologia Experimentalis et Applicata. 97 (1), pp. 41-46. https://doi.org/10.1046/j.1570-7458.2000.00714.x

The effect of spatial scale on interactions between two weevils and their parasitoid

A - Papers appearing in refereed journals

Mohd Norowi, Hamid, Perry, J. N., Powell, W. and Rennolls, K. 2000. The effect of spatial scale on interactions between two weevils and their parasitoid. Ecological Entomology. 25 (2), pp. 188-196. https://doi.org/10.1046/j.1365-2311.2000.00242.x

Farm scale evaluation of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim Report. 3 March 2000

D1 - Technical reports: non-confidential

Firbank, L. G., Brooks, D., Champion, G., Daniels, R., Dewar, A. M., Dixon, M., Haughton, A. J., Hawes, C., Heard, M., Hill, M., Lutman, P. J. W., Maudsley, M., May, M. J., Osborne, J. L., Pidgeon, J. D., Perry, J. N., Rothery, P., Roy, D., Scott, R., Squire, G., Watkins, J. and Woiwod, I. P. 2000. Farm scale evaluation of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim Report. 3 March 2000.

Factors affecting the relative abundance of two coexisting aphid species on sugar beet

A - Papers appearing in refereed journals

Williams, I. S., Van Der Werf, W., Dewar, A. M. and Dixon, A. F. G. 1999. Factors affecting the relative abundance of two coexisting aphid species on sugar beet. Agricultural and Forest Entomology. 1 (2), pp. 119-125. https://doi.org/10.1046/j.1461-9563.1999.00017.x

Parasitoid hosts

B - Book chapters etc edited externally

Powell, W. 1999. Parasitoid hosts. in: Hardie, J. and Minks, A. K. (ed.) Pheromones of non-lepidopteran insects associated with agricultural plants Wallingford, Oxon CAB International (CABI). pp. 405-427

Aphid-induced plant volatiles and the specific attraction of aphid parasitoids

C2 - Non-edited contributions to conferences

Poppy, G. M. and Powell, W. 1999. Aphid-induced plant volatiles and the specific attraction of aphid parasitoids. Abstracts 14th International Plant Protection Congress, Jerusalem, July 1999 .

Induction and systemic release of herbivore-induced plant volatiles mediating in-flight orientation of Aphidius ervi

A - Papers appearing in refereed journals

Guerrieri, E., Poppy, G. M., Powell, W., Tremblay, E. and Pennacchio, F. 1999. Induction and systemic release of herbivore-induced plant volatiles mediating in-flight orientation of Aphidius ervi. Journal of Chemical Ecology. 25, pp. 1247-1261.

Responses to aphid sex pheromones by the pea aphid parasitoids Aphidius ervi and Aphidius eadyi

A - Papers appearing in refereed journals

Glinwood, R. T., Du, Y-J. and Powell, W. 1999. Responses to aphid sex pheromones by the pea aphid parasitoids Aphidius ervi and Aphidius eadyi. Entomologia Experimentalis et Applicata. 92 (2), pp. 227-232. https://doi.org/10.1046/j.1570-7458.1999.00541.x

Vertical-Looking Radar: a powerful new tool for monitoring insect flight at altitude

C2 - Non-edited contributions to conferences

Chapman, J. W., Woiwod, I. P., Dewar, A. M., Reynolds, D. R., Smith, A. D. and Riley, J. R. 1999. Vertical-Looking Radar: a powerful new tool for monitoring insect flight at altitude. Abstracts British Ecological Society Winter and Annual General Meeting, Leeds, 20-22 December 1999 .

Vertical-Looking Radar: a powerful new tool for monitoring insect flight at altitude

C2 - Non-edited contributions to conferences

Chapman, J. W., Woiwod, I. P., Dewar, A. M., Reynolds, D. R., Smith, A. D. and Riley, J. 1999. Vertical-Looking Radar: a powerful new tool for monitoring insect flight at altitude. Abstracts 20th Symposium of the Royal Entomological Society: Insect Movement: Mechanisms and Consequences, London, 13-14 September 1999 .

Forty years of forecasting virus yellows incidence in sugar beet

B - Book chapters etc edited externally

Dewar, A. M. 1999. Forty years of forecasting virus yellows incidence in sugar beet. in: Smith, H. G. and Barker, H. (ed.) The Luteoviridae CABI International, Wallingford, Oxon (CABI). pp. 229-243

The effect of spatial scale on interactions between two weevils and their food plant

A - Papers appearing in refereed journals

Hamid, Mohd Norowi, Perry, J. N., Powell, W. and Rennolls, K. 1999. The effect of spatial scale on interactions between two weevils and their food plant. Acta Oecologica - International journal of ecology. 20, pp. 537-549.

Aphids, predators and parasitoids

C1 - Edited contributions to conferences/learned societies

Wadhams, L. J., Birkett, M. A., Powell, W. and Woodcock, C. M. 1999. Aphids, predators and parasitoids. Goode, J. A. and Chadwick, D. J. (ed.) Insect-plant Interactions and Induced Plant Defence. Novartis Foundation Symposium 223 . John Wiley & Sons Chichester, West Sussex. pp. 60-73

Comparative responses of parasitoids to synthetic and plant-extracted nepetalactone component of aphid sex pheromones

A - Papers appearing in refereed journals

Glinwood, R. T., Du, Y-J., Smiley, D. W. M. and Powell, W. 1999. Comparative responses of parasitoids to synthetic and plant-extracted nepetalactone component of aphid sex pheromones. Journal of Chemical Ecology. 25, pp. 1481-1488.

Farm-scale evaluation of GM crops explained

G - Articles in popular magazines and other technical publications

Firbank, L. G., Dewar, A. M., Hill, M. O., May, M. J., Perry, J. N., Rothery, P., Squire, G. R. and Woiwod, I. P. 1999. Farm-scale evaluation of GM crops explained. Nature. 399 (6738), pp. 727-728. https://doi.org/10.1038/21516

Rhizomania and other pests and diseases in 1998

G - Articles in popular magazines and other technical publications

Asher, M. J. C. and Dewar, A. M. 1999. Rhizomania and other pests and diseases in 1998. British Sugar Beet Review. 67(1), pp. 13-17.

Spatial aspects in modelling pest-crop interactions

C1 - Edited contributions to conferences/learned societies

Mohd Norowi, H., Perry, J. N., Powell, W. and Rennolls, K. 1999. Spatial aspects in modelling pest-crop interactions. Proceedings 5th International Conference on Plant Protection in the Tropics, Kuala Lumpur, 15-18 March 1999 . Malaysian Plant Protection Society, Kuala Lumpur, Malaysia. pp. 29-34

Aphid sex pheromones: manipulation of beneficial insects for aphid population control

C1 - Edited contributions to conferences/learned societies

Glinwood, R. T., Smiley, D. W. M., Hardie, J., Pickett, J. A., Powell, W., Wadhams, L. J. and Woodcock, C. M. 1999. Aphid sex pheromones: manipulation of beneficial insects for aphid population control. Wiley.

Aphid sex pheromones: manipulation of beneficial insects for aphid population control

C2 - Non-edited contributions to conferences

Glinwood, R., Smiley, D. W. M., Hardie, J., Pickett, J. A., Powell, W., Wadhams, L. J. and Woodcock, C. M. 1998. Aphid sex pheromones: manipulation of beneficial insects for aphid population control. Abstracts 9th International Congress on Pesticide Chemistry: the Food-Environment Challenge, London, 2-7 August 1998 . pp. 3D-002

Assessment of risks posed by pesticides to non-target arthropods

C2 - Non-edited contributions to conferences

Birnie, L. C., Kennedy, P. J., Shaw, K. E., Denholm, I., Perry, J. N. and Powell, W. 1998. Assessment of risks posed by pesticides to non-target arthropods. Abstracts 9th International Congress on Pesticide Chemistry: the Food-Environment Challenge, London, 2-7 August 1998 . pp. 8B-025

Selection for a moderately resistant clone of Myzus persicae (Hemiptera: Aphididae) on sugarbeet in the absence of pesticides

A - Papers appearing in refereed journals

Williams, I. S., Haylock, L. A., Dewar, A. M. and Dixon, A. F. G. 1998. Selection for a moderately resistant clone of Myzus persicae (Hemiptera: Aphididae) on sugarbeet in the absence of pesticides. Bulletin of Entomological Research. 88 (6), pp. 653-658. https://doi.org/10.1017/S0007485300054328

The influence of size and duration of aphid infestation on host plant quality, and its effect on sugar beet yellowing virus epidemiology

A - Papers appearing in refereed journals

Williams, I. S., Dewar, A. M. and Dixon, A. F. G. 1998. The influence of size and duration of aphid infestation on host plant quality, and its effect on sugar beet yellowing virus epidemiology. Entomologia Experimentalis et Applicata. 89 (1), pp. 25-33. https://doi.org/10.1046/j.1570-7458.1998.00378.x

Modelling the incidence of virus yellows in sugar beet in the UK in relation to numbers of migrating Myzus persicae

A - Papers appearing in refereed journals

Werker, A. R., Dewar, A. M. and Harrington, R. 1998. Modelling the incidence of virus yellows in sugar beet in the UK in relation to numbers of migrating Myzus persicae. Journal of Applied Ecology. 35 (5), pp. 811-818. https://doi.org/10.1046/j.1365-2664.1998.355340.x

Species specific induced susceptibility in aphid plant interactions

C1 - Edited contributions to conferences/learned societies

Williams, I. S. and Dewar, A. M. 1998. Species specific induced susceptibility in aphid plant interactions. Dixon, A. F. G. and Nietonafria, J. M. (ed.) Aphids in natural and managed ecosystems . Universidad de Leon, Leon. pp. 317-322

Pest control by a community of natural enemies

C1 - Edited contributions to conferences/learned societies

Sunderland, K. D., Axelsen, J. A., Dromph, K., Freier, B., Hemptinne, J-L., Holst, N. H., Mols, P. J. M., Petersen, M. K., Powell, W., Ruggle, P., Triltsch, H. and Winder, L. 1998. Pest control by a community of natural enemies.

Three into one will go - the evolution of resistance in the peach-potato aphid Myzus persicae

G - Articles in popular magazines and other technical publications

Dewar, A. M., Haylock, L. A., Foster, S. P., Devonshire, A. L. and Harrington, R. 1998. Three into one will go - the evolution of resistance in the peach-potato aphid Myzus persicae. British Sugar Beet Review. 66(4), pp. 14-19.

Control in sugar beet of Myzus persicae with different insecticide- resistance mechanisms

C1 - Edited contributions to conferences/learned societies

Dewar, A. M., Haylock, L. A., Campbell. J., Harling, Z., Foster, S. P. and Devonshire, A. L. 1998. Control in sugar beet of Myzus persicae with different insecticide- resistance mechanisms. Protection and Production of Sugar Beet and Potatoes. Aspects of Applied Biology 52 . pp. 407-414

The complementary roles of laboratory and field testing in ecotoxicological risk assessment

C1 - Edited contributions to conferences/learned societies

Denholm, I., Birnie, L. C., Kennedy, P. J., Shaw, K. E., Perry, J. N. and Powell, W. 1998. The complementary roles of laboratory and field testing in ecotoxicological risk assessment. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 1998 . pp. 583-590

Direct and indirect effects of transgenic potatoes expressing the snowdrop lectin (GNA) on the aphid parasitoid, Aphidius ervi

C2 - Non-edited contributions to conferences

Couty, A., Poppy, G. M., Powell, W. and Gatehouse, A. M. R. 1998. Direct and indirect effects of transgenic potatoes expressing the snowdrop lectin (GNA) on the aphid parasitoid, Aphidius ervi. Abstracts 10th International Symposium on Insect-Plant Relationships, Oxford, 4-11 July 1998 . pp. 55

Aphid sex pheromones to enhance parasitoid efficiency (Home-Grown Cereals Authority Project Report No. 155)

D1 - Technical reports: non-confidential

Powell, W. and Glinwood, R. T. 1998. Aphid sex pheromones to enhance parasitoid efficiency (Home-Grown Cereals Authority Project Report No. 155). H-GCA, London.

Analyses of the stomach deposit that develops in Myzus persicae feeding on sugar beet

A - Papers appearing in refereed journals

Kift, N. B., Mellon, F. A., Dewar, A. M. and Dixon, A. F. G. 1998. Analyses of the stomach deposit that develops in Myzus persicae feeding on sugar beet. Physiological Entomology. 23 (4), pp. 347-353. https://doi.org/10.1046/j.1365-3032.1998.234099.x

Onset of a decline in the quality of sugarbeet as a host for the aphid Myzus persicae

A - Papers appearing in refereed journals

Kift, N. B., Dewar, A. M. and Dixon, A. F. G. 1998. Onset of a decline in the quality of sugarbeet as a host for the aphid Myzus persicae. Entomologia Experimentalis et Applicata. 88 (2), pp. 155-161. https://doi.org/10.1046/j.1570-7458.1998.00357.x

Modelling the incidence of virus yellows in sugar beet in relation to numbers of migrating Myzus persicae

C1 - Edited contributions to conferences/learned societies

Werker, A. R., Dewar, A. M. and Harrington, R. 1998. Modelling the incidence of virus yellows in sugar beet in relation to numbers of migrating Myzus persicae. Protection and Production of Sugar Beet and Potatoes. Aspects of Applied Biology 52 . pp. 115-120

Semiochemicals to increase parasitism in aphid pest control

C1 - Edited contributions to conferences/learned societies

Powell, W. 1998. Semiochemicals to increase parasitism in aphid pest control. Wiley. https://doi.org/10.1002/(SICI)1096-9063(1998110)54:3<291::AID-PS804>3.0.CO;2-9

Increased parasitization of aphids on trap plants alongside vials releasing synthetic aphid sex pheromone and effective range of the pheromone

A - Papers appearing in refereed journals

Glinwood, R. T., Powell, W. and Tripathi, C. P. M. 1998. Increased parasitization of aphids on trap plants alongside vials releasing synthetic aphid sex pheromone and effective range of the pheromone. Biocontrol Science and Technology. 8 (4), pp. 607-614. https://doi.org/10.1080/09583159830126

Identification of semiochemicals released during aphid feeding that attract parasitoid Aphidius ervi

A - Papers appearing in refereed journals

Du, Y., Poppy, G. M., Powell, W., Pickett, J. A., Wadhams, L. J. and Woodcock, C. M. 1998. Identification of semiochemicals released during aphid feeding that attract parasitoid Aphidius ervi. Journal of Chemical Ecology. 24, pp. 1355-1368.

Control of peach-potato aphids, Myzus persicae , containing modified acetylcholinesterase on sugar beet under field cages

C2 - Non-edited contributions to conferences

Dewar, A. M., Haylock, L. A., Harling, Z., Foster, S. P. and Devonshire, A. L. 1998. Control of peach-potato aphids, Myzus persicae , containing modified acetylcholinesterase on sugar beet under field cages. Abstracts 9th International Congress on Pesticide Chemistry: the Food-Environment Challenge, London, 2-7 August 1998 . pp. 4D-017

The flightless aphid

G - Articles in popular magazines and other technical publications

Williams, I. H. and Dewar, A. M. 1998. The flightless aphid. British Sugar Beet Review. 66(2), pp. 35-37.

The relative effects of drought stress and virus yellows on the yield of sugarbeet in the UK, 1980-95

A - Papers appearing in refereed journals

Jaggard, K. W., Dewar, A. M. and Pidgeon, J. D. 1998. The relative effects of drought stress and virus yellows on the yield of sugarbeet in the UK, 1980-95. The Journal of Agricultural Science. 130, pp. 337-343. https://doi.org/10.1017/S0021859698005371

Pests and diseases in sugar beet: a review of problems in 1997

G - Articles in popular magazines and other technical publications

Dewar, A. M. and Asher, M. J. C. 1998. Pests and diseases in sugar beet: a review of problems in 1997. British Sugar Beet Review. 66(1), pp. 32-35.

Movement and persistence of [14C]imidacloprid in sugar-beet plants following application to pelleted sugar-beet seed

A - Papers appearing in refereed journals

Westwood, F., Bean, K. M., Dewar, A. M., Bromilow, R. H. and Chamberlain, K. 1998. Movement and persistence of [14C]imidacloprid in sugar-beet plants following application to pelleted sugar-beet seed. Pesticide Science. 52 (2), pp. 97-103. https://doi.org/10.1002/(SICI)1096-9063(199802)52:2<97::AID-PS687>3.0.CO;2-#

Strategies involved in the location of hosts by the parasitoid Aphidius ervi Haliday (Hymenoptera: Braconidae: Aphidiinae)

A - Papers appearing in refereed journals

Powell, W., Pennacchio, F., Poppy, G. M. and Tremblay, E. 1998. Strategies involved in the location of hosts by the parasitoid Aphidius ervi Haliday (Hymenoptera: Braconidae: Aphidiinae). Biological Control. 11, pp. 104-112.

Electrophoretic study of five aphid parasitoid species of the genus Aphidius (Hymenoptera: Braconidae), including evidence for reproductively isolated sympatric populations and a cryptic species

A - Papers appearing in refereed journals

Atanassova, P., Brookes, C. P., Loxdale, H. D. and Powell, W. 1998. Electrophoretic study of five aphid parasitoid species of the genus Aphidius (Hymenoptera: Braconidae), including evidence for reproductively isolated sympatric populations and a cryptic species. Bulletin of Entomological Research. 88 (1), pp. 3-13. https://doi.org/10.1017/S000748530004150X

The use of single-species spatially explicit models

C1 - Edited contributions to conferences/learned societies

Topping, C. J., Booij, K., Daamen, R. A., Dinter, A., Heimbach, U., Kennedy, P. J., Langer, V., Perry, J. N., Powell, W., Skirvin, D., Stilmant, D., Thomas, C. F. G. and Winstone, L. 1997. The use of single-species spatially explicit models.

The resistance of sugar beet to aphids

C1 - Edited contributions to conferences/learned societies

Williams, I. S., Kift, N. B., Dixon, A. F. G. and Dewar, A. M. 1997. The resistance of sugar beet to aphids. Proceedings 60th Congress of the Institut International de Recherches Betteravieres, Cambridge, July 1997 . pp. 595-599

Persistence of the selective aphicide triazamate in sugar beet in relation to its efficacy against aphids

C1 - Edited contributions to conferences/learned societies

Westwood, F., Bean, K. M. R., Dewar, A. M. and Haylock, L. A. 1997. Persistence of the selective aphicide triazamate in sugar beet in relation to its efficacy against aphids. Proceedings 60th Congress of the Institut International de Recherches Betteravieres, Cambridge, July 1997 . pp. 585-588

Monitoring and forecasting aphid vectors of beet viruses: a working system

C1 - Edited contributions to conferences/learned societies

Harrington, R., Dewar, A. M., Devonshire, A. L., Feather, M., Foster, S. P., Hallsworth, P. B., Harling, Z., Haylock, L. A., Parker, S. J. and Stevens, M. 1997. Monitoring and forecasting aphid vectors of beet viruses: a working system. Proceedings 60th Congress of the Institut International de Recherches Betteravieres, Cambridge, July 1997 . pp. 465-468

Pests of sugar beet in 1996 in the UK

G - Articles in popular magazines and other technical publications

Dewar, A. M. 1997. Pests of sugar beet in 1996 in the UK. Biatas - the Tillage Farmer. 4(6), pp. 12-14.

The effect of host plant-induced stomach precipitate on the ability of Myzus persicae (Hemiptera: Aphididae) to transmit sugarbeet yellowing viruses

A - Papers appearing in refereed journals

Williams, I. S., Dewar, A. M. and Dixon, A. F. G. 1997. The effect of host plant-induced stomach precipitate on the ability of Myzus persicae (Hemiptera: Aphididae) to transmit sugarbeet yellowing viruses. Bulletin of Entomological Research. 87 (6), pp. 643-647. https://doi.org/10.1017/S0007485300038748

Sugar beet production: strategies for the future

G - Articles in popular magazines and other technical publications

Miflin, B. J. and Dewar, A. M. 1997. Sugar beet production: strategies for the future. British Sugar Beet Review. 65(4), pp. 8-10.

In the shadow of Olympus

G - Articles in popular magazines and other technical publications

Dewar, A. M. 1997. In the shadow of Olympus. British Sugar Beet Review. 65(4), pp. 33-35.

Herbivore-induced synomones regulating the flight behaviour of the aphid parasitoid Aphidius ervi (Hymenoptera: Braconidae)

C2 - Non-edited contributions to conferences

Poppy, G. M., Guerrieri, E., Powell, W., Pennacchio, F. and Tremblay, E. 1997. Herbivore-induced synomones regulating the flight behaviour of the aphid parasitoid Aphidius ervi (Hymenoptera: Braconidae). Abstracts 6th European Workshop on Insect Parasitoids, Valencia, March 1997 .

Aphid-induced plant synomones affecting the foraging behaviour of the parasitoid Aphidius ervi

C2 - Non-edited contributions to conferences

Poppy, G. M., Guerrieri, E., Powell, W. and Pennacchio, F. 1997. Aphid-induced plant synomones affecting the foraging behaviour of the parasitoid Aphidius ervi. Abstracts Entomology '97, Newcastle, 10-12 September 1997 .

Physical and chemical cues regulating the oviposition behaviour of Aphidius ervi Haliday (Hymenoptera: Braconidae)

C2 - Non-edited contributions to conferences

Battaglia, D., Pennacchio, F., Poppy, G. M., Powell, W., Romano, A. and Tranfaglia, A. 1997. Physical and chemical cues regulating the oviposition behaviour of Aphidius ervi Haliday (Hymenoptera: Braconidae). Abstracts 6th European Workshop on Insect Parasitoids, Valencia, March 1997 .

Chemically mediated associative learning in the host foraging behavior of the aphid parasitoid Aphidius ervi (Hymenoptera: Braconidae)

A - Papers appearing in refereed journals

Du, Y., Poppy, G. M., Powell, W. and Wadhams, L. J. 1997. Chemically mediated associative learning in the host foraging behavior of the aphid parasitoid Aphidius ervi (Hymenoptera: Braconidae). Journal of Insect Behavior. 10, pp. 509-522.

Controlling virus yellows: how far does your Gaucho go?

G - Articles in popular magazines and other technical publications

Westwood, F., Bromilow, R. H. and Dewar, A. M. 1997. Controlling virus yellows: how far does your Gaucho go? British Sugar Beet Review. 65(3), pp. 39-42.

New insecticide sprays for sugar beet

G - Articles in popular magazines and other technical publications

Dewar, A. M. and Haylock, L. 1997. New insecticide sprays for sugar beet. British Sugar Beet Review. 65(1), pp. 37-39.

Aphid parasitoid responses to semiochemicals - genetic, conditioned or learnt?

A - Papers appearing in refereed journals

Poppy, G. M., Powell, W. and Pennacchio, F. 1997. Aphid parasitoid responses to semiochemicals - genetic, conditioned or learnt? Entomophaga. 42, pp. 193-199.

Sublethal effects of pesticides on locomotory behaviour of beneficial arthropods

C1 - Edited contributions to conferences/learned societies

Kennedy, P. J., Umoru, P. A. and Powell, W. 1997. Sublethal effects of pesticides on locomotory behaviour of beneficial arthropods. Haskell, P. T. and McEwen, P. K. (ed.) New studies in ecotoxicology . Welsh Pest Management Forum. pp. 37-41

Pests and diseases of sugar beet: a review of 1996

G - Articles in popular magazines and other technical publications

Asher, M. J. C. and Dewar, A. M. 1997. Pests and diseases of sugar beet: a review of 1996. British Sugar Beet Review. 65(1), pp. 14-19.

'Push-Pull' strategies for pest control

G - Articles in popular magazines and other technical publications

Smart, L. E., Pickett, J. A. and Powell, W. 1997. 'Push-Pull' strategies for pest control. Grain Legumes. No. 15, pp. 14-15.

The occurrence of aphid parasitoids in arable crops in northern Pakistan

C2 - Non-edited contributions to conferences

Rehman, A., Powell, W., Deadman, M. L. and Hashmi, A. A. 1997. The occurrence of aphid parasitoids in arable crops in northern Pakistan. Abstracts 3rd International Congress of Entomological Sciences, Islamabad, 18-20 March 1997 .

The relationship between pellet size and the quantity of imidacloprid applied to sugar beet pellets and the consequences for seedling emergence

A - Papers appearing in refereed journals

Dewar, A. M., Westwood, F., Bean, K. M., Haylock, L. A. and Osborne, R. 1997. The relationship between pellet size and the quantity of imidacloprid applied to sugar beet pellets and the consequences for seedling emergence. Crop Protection. 16, pp. 187-192.

The effect of plant age and infection with virus yellows on the survival of Myzus persicae on sugar beet

A - Papers appearing in refereed journals

Kift, N. B., Dewar, A. M., Werker, A. R. and Dixon, A. F. G. 1996. The effect of plant age and infection with virus yellows on the survival of Myzus persicae on sugar beet. Annals of Applied Biology - AAB. 129 (3), pp. 371-378. https://doi.org/10.1111/j.1744-7348.1996.tb05761.x

Influence of wheat and oat cultivars on the development of the cereal aphid parasitoid Aphidius rhopalosiphi and the generalist aphid parasitoid Ephedrus plagiator

A - Papers appearing in refereed journals

Fuentes-Contreras, J. E., Powell, W., Wadhams, L. J., Pickett, J. A. and Niemeyer, H. M. 1996. Influence of wheat and oat cultivars on the development of the cereal aphid parasitoid Aphidius rhopalosiphi and the generalist aphid parasitoid Ephedrus plagiator. Annals of Applied Biology - AAB. 128 (2), pp. 181-187. https://doi.org/10.1111/j.1744-7348.1996.tb05742.x

Host preference behaviour of the aphid parasitoids Praon volucre and Praon myzophagum (Hymenoptera: Aphidiidae)

C2 - Non-edited contributions to conferences

Rehman, A., Powell, W. and Deadman, M. L. 1996. Host preference behaviour of the aphid parasitoids Praon volucre and Praon myzophagum (Hymenoptera: Aphidiidae). Abstracts 2nd International Congress of Entomological Sciences, Islamabad, 19-21 March 1996 . pp. 69-70

Parasitoid responses to semiochemicals - innate, conditioned or learnt?

C2 - Non-edited contributions to conferences

Poppy, G. M., Powell, W. and Pennacchio, F. 1996. Parasitoid responses to semiochemicals - innate, conditioned or learnt? Proceedings Aphidophaga 6, Gembloux, 2-6 September 1996 .

Reproduction of beneficial predators and parasitoids in agroecosystems in relation to habitat quality and food availability

A - Papers appearing in refereed journals

Sunderland, K. D., Bilde, T., Den Nijs, L. J. M. F., Dinter, A., Heimbach, U., Lys, J. A., Powell, W. and Toft, S. 1996. Reproduction of beneficial predators and parasitoids in agroecosystems in relation to habitat quality and food availability. Acta Jutlandica. 71(2), pp. 117-153.

Genetic influences on aphid parasitoid host selection

C2 - Non-edited contributions to conferences

Powell, W. and Rehman. A. 1996. Genetic influences on aphid parasitoid host selection.

The effect of insecticide seed treatments on pests of sugar beet in Europe: results of the IIRB co-operative trials with pesticides added to pelleted seed in 1991, 1992 and 1993

A - Papers appearing in refereed journals

Wauters, A. and Dewar, A. M. 1996. The effect of insecticide seed treatments on pests of sugar beet in Europe: results of the IIRB co-operative trials with pesticides added to pelleted seed in 1991, 1992 and 1993. Parasitica. 51, pp. 143-173.

Strategies for controlling aphids and virus yellows in sugar beet

C1 - Edited contributions to conferences/learned societies

Dewar, A. M., Haylock, L. A. and Ecclestone, P. M. J. 1996. Strategies for controlling aphids and virus yellows in sugar beet. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 1996 . pp. 185-190

The caterpillar returns - a report of the epidemic of silver-Y moth caterpillars in sugar beet

G - Articles in popular magazines and other technical publications

Dewar, A. M. and Haylock, L. A. 1996. The caterpillar returns - a report of the epidemic of silver-Y moth caterpillars in sugar beet. British Sugar Beet Review. 64(4), pp. 4-6.

Strategies involved in the location of hosts by the aphid parasitoid Aphidius ervi Halliday (Hymenoptera: Braconidae: Aphidiinae)

C2 - Non-edited contributions to conferences

Powell, W., Pennacchio, F., Poppy, G. M. and Tremblay, E. 1996. Strategies involved in the location of hosts by the aphid parasitoid Aphidius ervi Halliday (Hymenoptera: Braconidae: Aphidiinae). Proceedings 20th International Congress of Entomology, Firenze, 25-31 August 1996 . pp. 623

The role of host-induced plant synomones on in-flight orientation of the aphid parasitoid Aphidius ervi Haliday (Hymenoptera, Braconidae)

C2 - Non-edited contributions to conferences

Guerrieri, E., Du, Y.J., Poppy, G. M., Powell, W., Pennacchio, F. and Tremblay, E. 1996. The role of host-induced plant synomones on in-flight orientation of the aphid parasitoid Aphidius ervi Haliday (Hymenoptera, Braconidae). Proceedings 20th International Congress of Entomology, Firenze, 25-31 August 1996 . pp. 647

Relative importance of semiochemicals from first and second trophic levels in host foraging behaviour of Aphidius ervi

A - Papers appearing in refereed journals

Du, Y.J., Poppy, G. M. and Powell, W. 1996. Relative importance of semiochemicals from first and second trophic levels in host foraging behaviour of Aphidius ervi. Journal of Chemical Ecology. 22, pp. 1591-1605.

Colour vision and oviposition behaviour in Aphidius ervi Haliday (Hymenoptera, Braconidae)

C2 - Non-edited contributions to conferences

Battaglia, D., Pennacchio, F., Romano, A., Tranfaglia, A., Poppy, G. M. and Powell, W. 1996. Colour vision and oviposition behaviour in Aphidius ervi Haliday (Hymenoptera, Braconidae). Proceedings 20th International Congress of Entomology, Firenze, 25-31 August 1996 . pp. 647

The foraging efficiency of the parasitoid Diaeretiella rapae (Hymenoptera: Braconidae) in relation to the spatial distribution of aphids on plants

A - Papers appearing in refereed journals

Powell, W. and Nickless, A. 1996. The foraging efficiency of the parasitoid Diaeretiella rapae (Hymenoptera: Braconidae) in relation to the spatial distribution of aphids on plants. Acta Jutlandica. 71(2), pp. 97-106.

The beet bites back

G - Articles in popular magazines and other technical publications

Kift, N. and Dewar, A. M. 1996. The beet bites back. British Sugar Beet Review. 64(3), pp. 18-21.

The effect of soil pests on seedling root growth and yield of sugar beet

C1 - Edited contributions to conferences/learned societies

Dewar, A. M. 1996. The effect of soil pests on seedling root growth and yield of sugar beet. Proceedings 59th Congress of the Institut International de Recherches Betteravieres, Brussels, February 1996 . pp. 229-237

Pest and disease problems in Chile: what lessons can be learnt?

G - Articles in popular magazines and other technical publications

Stevens, M. and Dewar, A. M. 1996. Pest and disease problems in Chile: what lessons can be learnt? British Sugar Beet Review. 64(2), pp. 34-38.

Strategies for controlling virus yellows in sugar beet

G - Articles in popular magazines and other technical publications

Dewar, A. M., Haylock, L. and Ecclestone, P. 1996. Strategies for controlling virus yellows in sugar beet. British Sugar Beet Review. 64(2), pp. 44-48.

Nature - red in tooth and claw: the predators of aphids in sugar beet

G - Articles in popular magazines and other technical publications

Dewar, A. M. 1996. Nature - red in tooth and claw: the predators of aphids in sugar beet. Tillage Farmer. 3(6), pp. 10-12.

Pest problems in sugar beet in the UK in 1995

G - Articles in popular magazines and other technical publications

Dewar, A. M. 1996. Pest problems in sugar beet in the UK in 1995. Tillage Farmer. 3(5), pp. 10-12.

Sex pheromone of aphid parasitoid Praon volucre (Hymenoptera, Braconidae)

A - Papers appearing in refereed journals

Nazzi, F., Powell, W., Wadhams, L. J. and Woodcock, C. M. 1996. Sex pheromone of aphid parasitoid Praon volucre (Hymenoptera, Braconidae). Journal of Chemical Ecology. 22, pp. 1169-1175.

Aphid attack - working on the insides

G - Articles in popular magazines and other technical publications

Powell, W. 1996. Aphid attack - working on the insides. Farming and Conservation. April 1996, pp. 12-14.

Sugar beet pests and diseases review of 1995

G - Articles in popular magazines and other technical publications

Dewar, A. M. and Asher, M. J. C. 1996. Sugar beet pests and diseases review of 1995. British Sugar Beet Review. 64(1), pp. 28-32.

Cold wind deals big blow for virus yellows

G - Articles in popular magazines and other technical publications

Dewar, A. M. and Harrington, R. 1996. Cold wind deals big blow for virus yellows. Arable Farming. 23(7), pp. 5-6.

Effect of pirimicarb on the foraging behaviour of Diaeretiella rapae (Hymenoptera: Braconidae) on host-free and infested oilseed rape plants

A - Papers appearing in refereed journals

Umoru, P. A., Powell, W. and Clark, S. J. 1996. Effect of pirimicarb on the foraging behaviour of Diaeretiella rapae (Hymenoptera: Braconidae) on host-free and infested oilseed rape plants. Bulletin of Entomological Research. 86 (2), pp. 193-201. https://doi.org/10.1017/S0007485300052445

Fatal attraction

G - Articles in popular magazines and other technical publications

Powell, W. 1995. Fatal attraction. Grower. 124(5), pp. 17-18.

Populations and communities

B - Book chapters etc edited externally

Powell, W. and Walton, M. P. 1995. Populations and communities. in: Jervis, M. A. and Kidd, N. (ed.) Insect natural enemies: practical approaches to their study and evaluation Chapman & Hall, London. pp. 223-292

Study of the uptake of [14C]imidacloprid in sugar beet

C1 - Edited contributions to conferences/learned societies

Westwood, F., Bean, K. M. R., Dewar, A. M. and Bromilow, R. H. 1995. Study of the uptake of [14C]imidacloprid in sugar beet. Proceedings 58th Congress of the Institut International de Recherches Betteravieres, Beaune, June 1995 . pp. 383-388

The long, hot summer spawns a red menace - red spider mites in sugar beet in 1995

G - Articles in popular magazines and other technical publications

Dewar, A. M. and Haylock, L. A. 1995. The long, hot summer spawns a red menace - red spider mites in sugar beet in 1995. British Sugar Beet Review. 63(4), pp. 20-22.

Control of resistant aphids in sugar beet

C1 - Edited contributions to conferences/learned societies

Dewar, A. M. and Devonshire, A. L. 1995. Control of resistant aphids in sugar beet. Proceedings 58th Congress of the Institut International de Recherches Betteravieres, Beaune, June 1995 . pp. 255-264

Virus yellows in sugar beet in Europe in 1994

G - Articles in popular magazines and other technical publications

Dewar, A. M. 1995. Virus yellows in sugar beet in Europe in 1994. Biatas - the Tillage Farmer. 2(5), pp. 8-10.

Virus yellows epidemic threatens beet crop

G - Articles in popular magazines and other technical publications

Dewar, A. M. 1995. Virus yellows epidemic threatens beet crop. Arable Farming. 25 April 1995, pp. 4-6.

Pest and disease review of 1994

G - Articles in popular magazines and other technical publications

Asher, M. J. A. and Dewar, A. M. 1995. Pest and disease review of 1994. British Sugar Beet Review. 63(1), pp. 34-38.

The 1995 IIRB congress in France

G - Articles in popular magazines and other technical publications

Longden, P. and Dewar, A. M. 1995. The 1995 IIRB congress in France. British Sugar Beet Review. 63(3), pp. 18-20.

Recent progress in sugar-beet seed research

B - Book chapters etc edited externally

Thomas, T. H., Asher, M. J. C. and Dewar, A. M. 1995. Recent progress in sugar-beet seed research. in: F.O. Licht World Sugar and Sweetener Yearbook 1995 F. O. Licht GmbH, Ratzeburg. pp. F5-F22

Within-field spatial heterogeneity of arthropod predators and parasitoids

C1 - Edited contributions to conferences/learned societies

Powell, W., Hawthorne, A., Hemptinne, J. L., Holopainen, J. K., Den Nijs, L. J. F. M., Riedel, W. and Ruggle, P. 1995. Within-field spatial heterogeneity of arthropod predators and parasitoids.

Using mark-release-recapture techniques to study the influence of spatial heterogeneity on carabids

C1 - Edited contributions to conferences/learned societies

Powell, W. and Ashby, J. E. 1995. Using mark-release-recapture techniques to study the influence of spatial heterogeneity on carabids.

Variations of body length, weight, fat content and survival in Coccinella septempunctata at different hibernation sites

A - Papers appearing in refereed journals

Zhou, X-L, Honek, A., Powell, W. and Carter, N. 1995. Variations of body length, weight, fat content and survival in Coccinella septempunctata at different hibernation sites. Entomologia Experimentalis et Applicata. 75 (2), pp. 99-107.

Effects of incorporating or burning straw, and of different cultivation systems, on winter wheat grown on two soil types, 1985-91

A - Papers appearing in refereed journals

Prew, R. D., Ashby, J. E., Bacon, E. T. G., Christian, D. G., Gutteridge, R. J., Jenkyn, J. F., Powell, W. and Todd, A. D. 1995. Effects of incorporating or burning straw, and of different cultivation systems, on winter wheat grown on two soil types, 1985-91. The Journal of Agricultural Science. 124 (2), pp. 173-194. https://doi.org/10.1017/S0021859600072853

IIRB Pests and Disease Group meeting 1994

G - Articles in popular magazines and other technical publications

Dewar, A. M. 1994. IIRB Pests and Disease Group meeting 1994. British Sugar Beet Review. 62(4), pp. 22-23.

Control of pests and diseases in sugar beet by seed treatments

C1 - Edited contributions to conferences/learned societies

Asher, M. J. C. and Dewar, A. M. 1994. Control of pests and diseases in sugar beet by seed treatments. Seed treatment: progress and prospects. British Crop Protection Council Monograph 57 . British Crop Protection Council (BCPC). pp. 151-158

The virus yellows warning scheme - an integrated pest management system for sugar beet in the UK

B - Book chapters etc edited externally

Dewar, A. M. 1994. The virus yellows warning scheme - an integrated pest management system for sugar beet in the UK. in: Watt, A. D., Walters, K. F. A., Mills, N. J. and Leather, S. R. (ed.) Individuals, populations and patterns in ecology Intercept Ltd Andover, Hampshire England. pp. 173-185

Effect of triazamate on resistant Myzus persicae on sugar beet under field cages

C1 - Edited contributions to conferences/learned societies

Dewar, A. M., Haylock, L. A., Chapman, J. W., Devine, G. J., Harling, Z. and Devonshire, A. L. 1994. Effect of triazamate on resistant Myzus persicae on sugar beet under field cages. Brighton Crop Protection Conference - Pests and Diseases, 1994 . pp. 407-412

The aphid sex pheromone: a novel host location cur for the parasitoid Praon volucre

C1 - Edited contributions to conferences/learned societies

Lilley, R., Hardie, J., Powell, W. and Wadhams, L. J. 1994. The aphid sex pheromone: a novel host location cur for the parasitoid Praon volucre. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 1994 . Wiley.

Detection of viruses and insecticide resistance in sugar beet aphids caught in suction traps

C1 - Edited contributions to conferences/learned societies

Stevens, M., Smith, H. G., Hallsworth, P. B., Haylock, L. A., Dewar, A. M., Devine, G. J., Harrington, R., Parker, S., Tatchell, G. M. and Devonshire, A. L. 1994. Detection of viruses and insecticide resistance in sugar beet aphids caught in suction traps. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 1994 . pp. 917-922

A European perspective on pesticide seed treatments in sugar beet

G - Articles in popular magazines and other technical publications

Dewar, A. M. and Asher, M. J. C. 1994. A European perspective on pesticide seed treatments in sugar beet. Pesticide Outlook. 5(3), pp. 11-17.

Pesticide seed treatments prove their worth in sugar beet

G - Articles in popular magazines and other technical publications

Ecclestone, P., Armstrong, M. J., Dewar, A. M. and Haylock, L. 1994. Pesticide seed treatments prove their worth in sugar beet. British Sugar Beet Review. 62(2), pp. 17-20.

Unharvested beet could pose virus yellows threat to this season's sugarbeet crop

G - Articles in popular magazines and other technical publications

Dewar, A. M. 1994. Unharvested beet could pose virus yellows threat to this season's sugarbeet crop. Arable Farming Plus. April 1994, pp. 18-22.

Pest and disease review of 1993

G - Articles in popular magazines and other technical publications

Dewar, A. M. and Asher, M. J. C. 1994. Pest and disease review of 1993. British Sugar Beet Review. 62(1), pp. 16-18.

The effect of pellet weight on the distribution of imidacloprid applied to sugar-beet pellets

C1 - Edited contributions to conferences/learned societies

Westwood, F., Bean, K. M. and Dewar, A. M. 1994. The effect of pellet weight on the distribution of imidacloprid applied to sugar-beet pellets. Seed treatment: progress and prospects. British Crop Protection Council Monograph 57 . British Crop Protection Council (BCPC). pp. 403-408

Electrophoretic studies of geographic and host strains of the aphid parasitoid Aphidius ervi

C2 - Non-edited contributions to conferences

Atanassova, P., Powell, W., Brookes, C. and Loxdale, H. 1994. Electrophoretic studies of geographic and host strains of the aphid parasitoid Aphidius ervi. Abstracts 5th European Congress of Entomology, York, 29th August-2nd September 1994 . pp. 251

Seasonal distribution and aerial movement of adult coccinellids on farmland

A - Papers appearing in refereed journals

Zhou, X-L, Carter, N. and Powell, W. 1994. Seasonal distribution and aerial movement of adult coccinellids on farmland. Biocontrol Science and Technology. 4, pp. 167-175.

Nemec and Stary's "population diversity centre" hypothesis for aphid parasitoids revisited

A - Papers appearing in refereed journals

Powell, W. 1994. Nemec and Stary's "population diversity centre" hypothesis for aphid parasitoids revisited. Norwegian Journal of Agricultural Sciences. Supplement 16, pp. 163-169.

The responses of Praon spp. parasitoids to aphid sex pheromone components in the field

A - Papers appearing in refereed journals

Hardie, J., Hick, A. J., Holler, C., Mann, J., Merritt, L., Nottingham, S. F., Powell, W., Wadhams, L. J., Witthinrich, J. and Wright, A. F. 1994. The responses of Praon spp. parasitoids to aphid sex pheromone components in the field. Entomologia Experimentalis et Applicata. 71 (2), pp. 95-99.

Design of field trials and its influence on the detection of pesticide side effects

C2 - Non-edited contributions to conferences

Kennedy, P. J., Carter, N., Walters, K. F. A., Perry, J. N., Powell, D. and Powell, W. 1994. Design of field trials and its influence on the detection of pesticide side effects. Abstracts Ecotoxicology - Ecological Dimensions: Proceedings 5th Annual Meeting of SETAC-Europe (UK Branch), Sheffield, 12-14 September 1994 . pp. 11

Design of field trials and its influence on the detection of pesticide side effects

C2 - Non-edited contributions to conferences

Kennedy, P. J., Carter, N., Walters, K. F. A., Perry, J. N., Powell, D. and Powell, W. 1994. Design of field trials and its influence on the detection of pesticide side effects. Abstracts 5th European Congress of Entomology, York, 29th August-2nd September 1994 . pp. 276

Sugar beet under analysis: the search for pesticide residues

G - Articles in popular magazines and other technical publications

Westwood, F. and Dewar, A. M. 1993. Sugar beet under analysis: the search for pesticide residues. British Sugar Beet Review. 61(2), pp. 38-40.

Profile on imidacloprid - another new seed treatment for sugar beet pest control

G - Articles in popular magazines and other technical publications

Dewar, A. M., Read, L. A., Prince, J. and Ecclestone, P. 1993. Profile on imidacloprid - another new seed treatment for sugar beet pest control. British Sugar Beet Review. 61(3), pp. 5-8.

Efficacy of insecticide sprays against the larvae of Mangold fly (Pegomya hyoscyami ) in sugar beet

D1 - Technical reports: non-confidential

Dewar, A. M. and Read, L. A. 1993. Efficacy of insecticide sprays against the larvae of Mangold fly (Pegomya hyoscyami ) in sugar beet. Wiley.

The stage is set for virus yellows epidemic

G - Articles in popular magazines and other technical publications

Dewar, A. M. 1993. The stage is set for virus yellows epidemic. Arable Farming Plus. April, pp. 24-26.

The increasing menace of leatherjackets, wireworms and slugs in sugar beet

G - Articles in popular magazines and other technical publications

Dewar, A. M. 1993. The increasing menace of leatherjackets, wireworms and slugs in sugar beet. British Sugar Beet Review. 61(4), pp. 24-26.

A review of virus yellows incidence in the UK in 1992

G - Articles in popular magazines and other technical publications

Dewar, A. M. 1993. A review of virus yellows incidence in the UK in 1992. Biatas - the Tillage Farmer. 47(5), pp. 14-18.

The field attraction of female %Praon parasitoids to an aphid sex pheromone

C2 - Non-edited contributions to conferences

Lilley, R. I., Hardie, J., Powell, W. and Wadhams, L. J. 1993. The field attraction of female %Praon parasitoids to an aphid sex pheromone. Abstracts 5th International Symposium of the Global IOBC Working Group on the Ecology of Aphidophaga: Behavioural Ecology, Augmentation and Enhancement of Aphidophaga, Antibes, 6-10 September 1993 .

Electroantennogram and olfactometer responses of aphid parasitoids to nepetalactone, a component of aphid sex pheromones

C2 - Non-edited contributions to conferences

Hardie, J., Isaacs, R., Nazzi, F., Powell, W., Wadhams, L. J. and Woodcock, C. M. 1993. Electroantennogram and olfactometer responses of aphid parasitoids to nepetalactone, a component of aphid sex pheromones. Abstracts 5th International Symposium of the Global IOBC Working Group on the Ecology of Aphidophaga: Behavioural Ecology, Augmentation and Enhancement of Aphidophaga, Antibes, 6-10 September 1993 .

Responses of the parasitoid Praon volucre (Hymenoptera: Braconidae) to aphid sex pheromone lures in cereal fields in autumn: implications for parasitoid manipulation

A - Papers appearing in refereed journals

Powell, W., Hardie, J., Hick, A. J., Holler, C., Mann, J., Merritt, L., Nottingham, S. F., Wadhams, L. J., Witthinrich, J. and Wright, A. F. 1993. Responses of the parasitoid Praon volucre (Hymenoptera: Braconidae) to aphid sex pheromone lures in cereal fields in autumn: implications for parasitoid manipulation. European Journal of Entomology. 90, pp. 435-438.

Sex pheromones in the cereal aphid parasitoids Praon volucre and Aphidius rhopalosiphi

A - Papers appearing in refereed journals

Decker, U. M., Powell, W. and Clark, S. J. 1993. Sex pheromones in the cereal aphid parasitoids Praon volucre and Aphidius rhopalosiphi. Entomologia Experimentalis et Applicata. 69 (1), pp. 33-39. https://doi.org/10.1111/j.1570-7458.1993.tb01725.x

Comparisons of granular pesticides for the control of soil-inhabiting arthropod pests of sugar beet

A - Papers appearing in refereed journals

Winder, G. H., Dewar, A. M. and Dunning, R. A. 1993. Comparisons of granular pesticides for the control of soil-inhabiting arthropod pests of sugar beet. Crop Protection. 12, pp. 148-154.

Management of genetics of biological control introductions

A - Papers appearing in refereed journals

Hopper, K. R., Roush, R. T. and Powell, W. 1993. Management of genetics of biological control introductions. Annual Review of Entomology. 38, pp. 27-51.

The relationship between primary parasitoids and hyperparasitoids of cereal aphids: an analysis of field data

A - Papers appearing in refereed journals

Holler, C., Borgemeister, C. W., Haardt, H. and Powell, W. 1993. The relationship between primary parasitoids and hyperparasitoids of cereal aphids: an analysis of field data. Journal of Animal Ecology. 62 (1), pp. 12-21. https://doi.org/10.2307/5478

Controlling sugar beet's aphid threat

G - Articles in popular magazines and other technical publications

Dewar, A. M. 1992. Controlling sugar beet's aphid threat. Shell agriculture. 13, pp. 17-20.

Synomones and kairomones from plants and honeydew in susceptible and resistant varieties; their importance to natural enemies.

C2 - Non-edited contributions to conferences

Powell, W. 1992. Synomones and kairomones from plants and honeydew in susceptible and resistant varieties; their importance to natural enemies. Abstracts 19th International Congress of Entomology, Beijing, 1992 .

Genetics of biological control introductions

C2 - Non-edited contributions to conferences

Hopper, K. R., Rousch, R. T. and Powell, W. 1992. Genetics of biological control introductions. Abstracts 19th International Congress of Entomology, Beijing, 1992 .

Genetics of biological control introductions

C2 - Non-edited contributions to conferences

Hopper, K. R., Roush, R. T. and Powell, W. 1992. Genetics of biological control introductions. Abstracts 19th International Congress of Entomology, Beijing, 1992 .

Tritrophic influences on aphid parasitoids (Hym.,Braconidae:Aphidiinae)

C1 - Edited contributions to conferences/learned societies

Powell, W. 1992. Tritrophic influences on aphid parasitoids (Hym.,Braconidae:Aphidiinae).

The assessment of resistance and detection of viruses in aphids on sugar beet as an aid towards rationalisation of pesticide use

C2 - Non-edited contributions to conferences

Dewar, A. M. and Stevens, M. 1992. The assessment of resistance and detection of viruses in aphids on sugar beet as an aid towards rationalisation of pesticide use. Abstracts Viruses, Vectors and the Environment. ISPP 5th International Plant Epidemiology Symposium, Valenzano (Bari), Italy, 27-31 July 1992 . pp. 199-200

The use of ELISA techniques to aid forecasting and control of aphids in sugar beet

C1 - Edited contributions to conferences/learned societies

Dewar, A. M. 1992. The use of ELISA techniques to aid forecasting and control of aphids in sugar beet. Proceedings 19th International Congress of Entomology, Beijing, 1992 . pp. 364

Incidence and control of virus yellows in sugar beet in England

G - Articles in popular magazines and other technical publications

Dewar, A. M. 1992. Incidence and control of virus yellows in sugar beet in England. Biatas - the Tillage Farmer. 46(2), pp. 12-15.

Production and Protection of Sugar Beet. Aspects of Applied Biology 32

E - Books edited/written by staff member, alone/with others

Asher, M. J. C., Dewar, A. M., Heath, M. C. and Jaggard, K. W. May, M. J. (ed.) 1992. Production and Protection of Sugar Beet. Aspects of Applied Biology 32. Association of Applied Biologists, Wellesbourne.

Towards integrated control of aphids and virus yellows in sugar beet

G - Articles in popular magazines and other technical publications

Dewar, A. M. 1992. Towards integrated control of aphids and virus yellows in sugar beet. British Sugar Beet Review. 60(4), p. 28.

The yin and yang of Chinese sugar beet production

G - Articles in popular magazines and other technical publications

Dewar, A. M. and Thomas, T. H. 1992. The yin and yang of Chinese sugar beet production. British Sugar Beet Review. 60(4), pp. 36-39.

Effects of imidacloprid on aphids and virus yellows in sugar beet

G - Articles in popular magazines and other technical publications

Dewar, A. M. 1992. Effects of imidacloprid on aphids and virus yellows in sugar beet. Pflanzenschutz-Nachrichten Bayer. 45, pp. 423-442.

Monitoring insecticide resistance of aphids in sugar beet and potatoes in England and Wales 1982-1991

C1 - Edited contributions to conferences/learned societies

Hockland, S., Hines, C., Furk, C., Devonshire, A. L., Devine, G. J., Dewar, A. M. and Read, L. A. 1992. Monitoring insecticide resistance of aphids in sugar beet and potatoes in England and Wales 1982-1991. Production and Protection of Sugar Beet. Aspects of Applied Biology .

The effects of pellet type, and insecticides applied to the pellets on plant establishment and pest incidence in sugar beet in some European countries

C1 - Edited contributions to conferences/learned societies

Dewar, A. M. 1992. The effects of pellet type, and insecticides applied to the pellets on plant establishment and pest incidence in sugar beet in some European countries. Proceedings 55th Winter Congress International Institute for Sugar Beet Research, Brussels, February 1992. pp. 89-112

Effect of imidacloprid on transmission of viruses by aphids in sugar beet

C1 - Edited contributions to conferences/learned societies

Dewar, A. M., Read, L. A., Hallsworth, P. B. and Smith, H. G. 1992. Effect of imidacloprid on transmission of viruses by aphids in sugar beet. Proceedings Brighton Crop Protection Conference - Pests and Diseases,1992 . pp. 563-568

Pests of Chenopodiaceous crops

B - Book chapters etc edited externally

Cooke, D. A. and Dewar, A. M. 1992. Pests of Chenopodiaceous crops. in: Mckinlay, R. G. (ed.) Vegetable crop pests Macmillan Press Basingstoke Hampshire. pp. 28-73

The value of statistical models in aphid forecasting

C1 - Edited contributions to conferences/learned societies

Harrington, R., Dewar, A. M., Howling, G. G. and Bale, J. S. 1992. The value of statistical models in aphid forecasting. Proceedings Brighton Crop Protection Conference - Pests and Diseases,1992 . pp. 965-972

Honeydew as an ovipositional stimulant for two species of syrphids

A - Papers appearing in refereed journals

Budenberg, W. J. and Powell, W. 1992. Honeydew as an ovipositional stimulant for two species of syrphids. Entomologia Experimentalis et Applicata. 64, pp. 57-61.

The influence of aphids and honeydew on the leaving rate of searching aphid parasitoids from wheat plants

A - Papers appearing in refereed journals

Budenberg, W. J., Powell, W. and Clark, S. J. 1992. The influence of aphids and honeydew on the leaving rate of searching aphid parasitoids from wheat plants. Entomologia Experimentalis et Applicata. 63 (3), pp. 259-264. https://doi.org/10.1111/j.1570-7458.1992.tb01582.x

The influence of host food plants on host recognition by four aphidiine parasitoids (Hymenoptera: Braconidae)

A - Papers appearing in refereed journals

Powell, W. and Wright, A. F. 1992. The influence of host food plants on host recognition by four aphidiine parasitoids (Hymenoptera: Braconidae). Bulletin of Entomological Research. 81 (4), pp. 449-453. https://doi.org/10.1017/S0007485300032028

Effect of established and novel aphicides on resistant Myzus persicae (Sulz.) on sugar beet under field cages

A - Papers appearing in refereed journals

Dewar, A. M., Read, L. A., Thornhill, W. A., Smith, S. D. and Devonshire, A. L. 1992. Effect of established and novel aphicides on resistant Myzus persicae (Sulz.) on sugar beet under field cages. Crop Protection. 11, pp. 21-26.

Ecology and population dynamics: Chairman's summing up and comments for the session on ecology and population dynamics

C2 - Non-edited contributions to conferences

Powell, W. 1991. Ecology and population dynamics: Chairman's summing up and comments for the session on ecology and population dynamics. Proceedings 4th European Parasitoid Workshop, Perugia, Italy, 3-5 April 1991 . pp. 5-6

Biochemical interactions between plant-herbivore-parasitoid

C1 - Edited contributions to conferences/learned societies

Pickett, J. A., Powell, W., Wadhams, L. J., Woodcock, C. M. and Wright, A. F. 1991. Biochemical interactions between plant-herbivore-parasitoid. Insect Parasitoids: 4th European Workshop, Perugia, April 1991.

Cereal aphids and their natural enemies

C1 - Edited contributions to conferences/learned societies

Wratten, S. D. and Powell, W. 1991. Cereal aphids and their natural enemies. Carter, N., Potts, G. R., Darbyshire, J. F. and Firbank, L. G. (ed.) The Ecology of Temperate Cereal Fields. Proceedings 32nd Symposium of the British Ecological Society with the Association of Applied Biologists, University of Cambridge, 1991. Blackwell Scientific Publications, Oxford. pp. 233-257

The influence of semiochemicals on the behaviour of cereal aphid parasitoids (Hymenoptera)

C1 - Edited contributions to conferences/learned societies

Powell, W., Decker, U. M. and Budenberg, W. J. 1991. The influence of semiochemicals on the behaviour of cereal aphid parasitoids (Hymenoptera). Chambers, R. J., Hodek, I., Dixon, A. F. G. and Polgar, L. (ed.) Behaviour and impact of Aphidophaga. SPB Academic Publishing, The Hague. pp. 67-71

Synthetic aphid sex pheromone lures female parasitoids

A - Papers appearing in refereed journals

Hardie, J., Nottingham, S. F., Powell, W. and Wadhams, L. J. 1991. Synthetic aphid sex pheromone lures female parasitoids. Entomologia Experimentalis et Applicata. 61 (1), pp. 97-99.

Control of virus yellows in sugar beet

A - Papers appearing in refereed journals

Dewar, A. M. 1991. Control of virus yellows in sugar beet. Hardi Rama - Sprayer and Crop Protection Magazine.

Brighton 1990: a report from the Brighton Crop Protection Conference on Pests and Diseases

G - Articles in popular magazines and other technical publications

Dewar, A. M. and Winder, G. H. 1991. Brighton 1990: a report from the Brighton Crop Protection Conference on Pests and Diseases. British Sugar Beet Review. 59(1), pp. 26-27.

The effects of tefluthrin on beneficial insects in sugar beet

C1 - Edited contributions to conferences/learned societies

Dewar, A. M., Thornhill, W. A. and Read, L. A. 1990. The effects of tefluthrin on beneficial insects in sugar beet. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 1990. pp. 987-992

Evaluation of an insecticidal seed treatment, Imidacloprid, for controlling aphids on sugar beet

C1 - Edited contributions to conferences/learned societies

Dewar, A. M. and Read, L. M. 1990. Evaluation of an insecticidal seed treatment, Imidacloprid, for controlling aphids on sugar beet. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 1990. pp. 721-726

Conservation and manipulation of aphid parasitoids

C1 - Edited contributions to conferences/learned societies

Powell, W., Budenberg, W. J., Decker, U. M. and Wright, A. F. 1990. Conservation and manipulation of aphid parasitoids. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 1990. pp. 185-690

New active ingredients for controlling aphids and virus yellows in sugar beet.

G - Articles in popular magazines and other technical publications

Dewar, A. M. 1990. New active ingredients for controlling aphids and virus yellows in sugar beet.

Resistance of Myzus persicae to insecticides applied to sugar beet

C1 - Edited contributions to conferences/learned societies

Smith, S. D. J., Dewar, A. M. and Devonshire, A. L. 1990. Resistance of Myzus persicae to insecticides applied to sugar beet. Proceedings of the 53rd Winter Congress of the International Institute of Sugar Beet Research, Brussels. IIRB, Brussels. pp. 379-398

The continuing story of virus yellows.

A - Papers appearing in refereed journals

Dewar, A. M. and Smith, H. G. 1990. The continuing story of virus yellows. British Sugar Beet Review. 58 (1), pp. 15-19.

Electrophoresis as a tool for estimating levels of hymenopterous parasitism in field populations of the cereal aphid, Sitobion avenae .

A - Papers appearing in refereed journals

Walton, M. P., Powell, W., Loxdale, H. D. and Allen-Williams, L. J. 1990. Electrophoresis as a tool for estimating levels of hymenopterous parasitism in field populations of the cereal aphid, Sitobion avenae . Entomologia Experimentalis et Applicata. 54 (3), pp. 271-279.

Results of the co-operative trials on pesticides in pelleted seeds, 1987-1988.

C1 - Edited contributions to conferences/learned societies

Dewar, A. M. 1989. Results of the co-operative trials on pesticides in pelleted seeds, 1987-1988. &nbsp;Proceedings of the 52nd Winter Congress, Brussels, 1989, pp. 163-178..

The use of electrophoresis in the study of hymenopteran parasitoids of agricultural pests.

B - Book chapters etc edited externally

Powell, W. and Walton, M. P. 1989. The use of electrophoresis in the study of hymenopteran parasitoids of agricultural pests. in: Electrophoretic studies on agricultural pests. Systematics Association Special Volume H.D. Loxdale & J. Den Hollander eds Clarendon Press, Oxford.

Pests and diseases of sugar beet.

B - Book chapters etc edited externally

Cooke, D. A., Dewar, A. M. and Asher, M. J. C. 1989. Pests and diseases of sugar beet. in: Pest and disease control handbook. 3rd edn, N. Scopes & L. Stables eds British Crop Protection Council (BCPC). pp. 241-260

A taste of Turkish sugar.

G - Articles in popular magazines and other technical publications

Dewar, A. M. and Asher, M. J. C. 1989. A taste of Turkish sugar. British Sugar Beet Review. 57 (2), pp. 17-19.

Forecasting the incidence of virus yellows in sugar beet in England.

A - Papers appearing in refereed journals

Harrington, R., Dewar, A. M. and George, B. 1989. Forecasting the incidence of virus yellows in sugar beet in England. Annals of Applied Biology - AAB. 114 (3), pp. 459-469. https://doi.org/10.1111/j.1744-7348.1989.tb03361.x

Effectiveness of different insecticides applied at various growth stages to control aphids on winter wheat.

A - Papers appearing in refereed journals

Carter, N., Powell, W., Wright, A. F. and Ashby, J. E. 1989. Effectiveness of different insecticides applied at various growth stages to control aphids on winter wheat. Crop Protection. 8, pp. 271-276.

Chemical control.

C2 - Non-edited contributions to conferences

Dewar, A. M. 1988. Chemical control. IIRB Pests and Diseases Study Group, Brussels, 1988&nbsp;. pp. 59-67

New insecticides for sugar beet seed.

G - Articles in popular magazines and other technical publications

Winder, G. H. and Dewar, A. M. 1988. New insecticides for sugar beet seed. British Sugar Beet Review. 56 (4), pp. 23-24.

Rational pesticide use in sugar beet.

G - Articles in popular magazines and other technical publications

Dewar, A. M. 1988. Rational pesticide use in sugar beet. British Sugar Beet Review. 56, pp. (3), 6-8.

Aphid control in sugar beet.

G - Articles in popular magazines and other technical publications

Dewar, A. M. 1988. Aphid control in sugar beet.

Observations on the effects of an autumn application of a pyrethroid insecticide on non-target predatory species in winter cereals.

C1 - Edited contributions to conferences/learned societies

Purvis, G., Carter, N. and Powell, W. 1988. Observations on the effects of an autumn application of a pyrethroid insecticide on non-target predatory species in winter cereals. Integrated crop protection in cereals. Proceedings of the EC Experts' Group Meeting, Littlehampton, 1986. Eds R. Cavalloro & K. Sunderland. pp. 153-159

Honeydew as a kairomone for aphid parasitoids and hyperparasitoids.

C1 - Edited contributions to conferences/learned societies

Budenberg, W. J. and Powell, W. 1988. Honeydew as a kairomone for aphid parasitoids and hyperparasitoids. &nbsp;Proceedings British Crop Protection Conference - Pests and Diseases, Brighton, 1988, 1149-1154..

The abilities of the aphid parasitoids Aphidius ervi Haliday and A. rhopalosiphi De Stefani Perez (Hymenoptera: Braconidae) to transfer between different known host species and the implications for the use of alternative hosts in pest control strategies.

A - Papers appearing in refereed journals

Powell, W. and Wright, A. F. 1988. The abilities of the aphid parasitoids Aphidius ervi Haliday and A. rhopalosiphi De Stefani Perez (Hymenoptera: Braconidae) to transfer between different known host species and the implications for the use of alternative hosts in pest control strategies. Bulletin of Entomological Research. 78 (4), pp. 683-693. https://doi.org/10.1017/S0007485300015546

Possibilities for reducing pesticide usage in sugar beet in England

C1 - Edited contributions to conferences/learned societies

Dewar, A. M. 1988. Possibilities for reducing pesticide usage in sugar beet in England. Proceedings 51st Winter Congress International Institute for Sugar Beet Research. Brussels : IIRB. pp. 93-99

The virus yellows threat for 1988.

G - Articles in popular magazines and other technical publications

Smith, H. G. and Dewar, A. M. 1988. The virus yellows threat for 1988. British Sugar Beet Review. 56 (1), pp. 25-26.

The rise and rise of the resistant aphid.

G - Articles in popular magazines and other technical publications

Dewar, A. M., Devonshire, A. L. and Ffrench-Constant, R. H. 1988. The rise and rise of the resistant aphid. British Sugar Beet Review. 56 (1), pp. 40-43.

A revision of the forecasting scheme for virus yellows in sugar beet in the UK.

C2 - Non-edited contributions to conferences

Dewar, A. M. and Harrington, R. 1988. A revision of the forecasting scheme for virus yellows in sugar beet in the UK. Proceedings XVIII International Congress of Entomology, Vancouver, B.C., Canada, 1988, 367..

Accurate estimation of invertebrate density in cereals.

G - Articles in popular magazines and other technical publications

Sunderland, K. D., Hawkes, C., Stevenson, J. H., Mcbride, T., Smart, L. E., Sopp, P. I., Powell, W., Chambers, R. J. and Carter, O. C. R. 1987. Accurate estimation of invertebrate density in cereals. Bulletin IOBC/WPRS/SROP . 10, pp. 71-81.

Recent developments in sugar-beet seed treatments.

G - Articles in popular magazines and other technical publications

Dewar, A. M., Asher, M. J. C., Winder, G. H., Payne, P. A. and Prince, J. W. 1987. Recent developments in sugar-beet seed treatments.

Comparison of application methods for aphicides on sugar beet and swedes

A - Papers appearing in refereed journals

Cayley, G. R., Griffiths, D. C., Lethwaite, R., Pye, B. J., Dewar, A. M. and Winder, G. H. 1987. Comparison of application methods for aphicides on sugar beet and swedes. Crop Protection. 6 (6), pp. 365-370. https://doi.org/10.1016/0261-2194(87)90069-X

Crop protection in the future : a report of the 1986 British Crop Protection Conference.

G - Articles in popular magazines and other technical publications

Dewar, A. M. and Winder, G. H. 1987. Crop protection in the future : a report of the 1986 British Crop Protection Conference. British Sugar Beet Review. 55 (1), pp. 22-23.

Virus yellows - past scourge, future threat?

G - Articles in popular magazines and other technical publications

Dewar, A. M., Smith, H. and Thornhill, W. A. 1987. Virus yellows - past scourge, future threat? British Sugar Beet Review. 55 (1), pp. 12-14.

Some factors affecting the growth and yield of winter wheat grown as a third cereal with much or negligible take-all

A - Papers appearing in refereed journals

Prew, R. D., Beane, J., Carter, N., Church, B. M., Dewar, A. M., Lacey, J., Penny, A., Plumb, R. T., Thorne, G. N. and Todd, A. D. 1986. Some factors affecting the growth and yield of winter wheat grown as a third cereal with much or negligible take-all. The Journal of Agricultural Science. 107 (3), pp. 639-671. https://doi.org/10.1017/S0021859600069811

Forecasting and control of virus yellows and aphids in sugar beet.

G - Articles in popular magazines and other technical publications

Dewar, A. M. 1986. Forecasting and control of virus yellows and aphids in sugar beet. British Sugar Beet Review. 54 (2), pp. 49-52.

Interference between parasitoids (Hym.: Aphididae) and fungi (Entomophthorales) attacking cereal aphids.

A - Papers appearing in refereed journals

Powell, W., Wilding, N., Brobyn, P. J. and Clark, S. J. 1986. Interference between parasitoids (Hym.: Aphididae) and fungi (Entomophthorales) attacking cereal aphids. Entomophaga. 31, pp. 293-302. https://doi.org/10.1007/BF02373339

The influence of weeds on aphid-specific natural enemies in winter wheat.

A - Papers appearing in refereed journals

Powell, W., Dean, G. J. and Wilding, N. 1986. The influence of weeds on aphid-specific natural enemies in winter wheat. Crop Protection. 5, pp. 182-189.

The effects of sowing date and other factors on growth, yield and nitrogen uptake, and on the incidence of pests and diseases, of winter barley at Rothamsted from 1981 to 1983.

A - Papers appearing in refereed journals

Widdowson, F. V., Darby, R. J., Dewar, A. M., Jenkyn, J. F., Kerry, B. R., Lawlor, D. W., Plumb, R. T., Ross, G. J. S., Scott, G. C., Todd, A. D. and Wood, D. W. 1986. The effects of sowing date and other factors on growth, yield and nitrogen uptake, and on the incidence of pests and diseases, of winter barley at Rothamsted from 1981 to 1983. The Journal of Agricultural Science. 106, pp. 551-574. https://doi.org/10.1017/S0021859600063437

Biocontrol of cereal aphids in the United Kingdom by a range of natural enemies.

G - Articles in popular magazines and other technical publications

Powell, W. 1986. Biocontrol of cereal aphids in the United Kingdom by a range of natural enemies.

Recent developments in the control of nematode and and soil-arthropod pests of sugar beet.

G - Articles in popular magazines and other technical publications

Dewar, A. M. and Cooke, D. A. 1986. Recent developments in the control of nematode and and soil-arthropod pests of sugar beet.

Enhancing parasitoid activity in crops.

G - Articles in popular magazines and other technical publications

Powell, W. 1986. Enhancing parasitoid activity in crops.

To treat or not to treat - prospects for forecasting soil pest damage

A - Papers appearing in refereed journals

Dewar, A. M. and Cooper, J. M. 1985. To treat or not to treat - prospects for forecasting soil pest damage. British Sugar Beet Review. 54 (4), pp. 39-40.

Decreased severity of flea beetle damage to sugar-beet seedlings associated with experimental insecticide treatments incorporated in pelleted sugar-beet seed

A - Papers appearing in refereed journals

Winder, G. H. and Dewar, A. M. 1985. Decreased severity of flea beetle damage to sugar-beet seedlings associated with experimental insecticide treatments incorporated in pelleted sugar-beet seed. Annals of Applied Biology - AAB. 106, pp. 30-31.

Assessment of resistance of commercial varieties of winter-wheat to cereal aphids

A - Papers appearing in refereed journals

Dewar, A. M., Carter, N. and Powell, W. 1985. Assessment of resistance of commercial varieties of winter-wheat to cereal aphids. Annals of Applied Biology - AAB. 106, pp. 168-169.

Some factors limiting the growth and yield of winter-wheat and their variation in 2 seasons

A - Papers appearing in refereed journals

Prew, R. D., Church, B. M., Dewar, A. M., Lacey, J., Magan, N., Penny, A., Plumb, R. T., Thorne, G. N., Todd, A. D. and Williams, T. D. 1985. Some factors limiting the growth and yield of winter-wheat and their variation in 2 seasons. The Journal of Agricultural Science. 104 (1), pp. 135-162. https://doi.org/10.1017/s0021859600043070

Effects of pirimicarb, dimethoate and benomyl on natural enemies of cereal aphids in winter wheat

A - Papers appearing in refereed journals

Powell, W., Dean, G. J. and Bardner, R. 1985. Effects of pirimicarb, dimethoate and benomyl on natural enemies of cereal aphids in winter wheat. Annals of Applied Biology - AAB. 106 (2), pp. 235-242. https://doi.org/10.1111/j.1744-7348.1985.tb03113.x

The influence of weeds on polyphagous arthropod predators in winter wheat

A - Papers appearing in refereed journals

Powell, W., Dean, G. J. and Dewar, A. 1985. The influence of weeds on polyphagous arthropod predators in winter wheat. Crop Protection. 4, pp. 298-312.

Pheromones in the management of beneficial insects

A - Papers appearing in refereed journals

Pickett, J. A., Dawson, G. W., Free, J. B., Griffiths, D. C., Powell, W., Williams, I. M. and Woodcock, C. M. 1984. Pheromones in the management of beneficial insects. Proceedings of the British Crop Protection Council. 1, pp. 247-254.

Pheromones in the management of beneficial insects

A - Papers appearing in refereed journals

Dawson, G. W., Free, J. B., Griffiths, D. C., Powell, W., Williams, I. M. and Woodcock, C. M. 1984. Pheromones in the management of beneficial insects. Proceedings of the British Crop Protection Council. 1, pp. 247-254.

Decision trees to assess the risk of cereal aphid (hemiptera, aphididae) outbreaks in summer in England

A - Papers appearing in refereed journals

Dewar, A. M. and Carter, N. 1984. Decision trees to assess the risk of cereal aphid (hemiptera, aphididae) outbreaks in summer in England. Bulletin of Entomological Research. 74 (3), pp. 387-398. https://doi.org/10.1017/s0007485300015650

A comparison of cereal-aphid migrations over Britain in the summers of 1979 and 1982

A - Papers appearing in refereed journals

Dewar, A. M., Tatchell, G. M. and Turl, L. A. D. 1984. A comparison of cereal-aphid migrations over Britain in the summers of 1979 and 1982. Crop Protection. 3 (3), pp. 379-389. https://doi.org/10.1016/0261-2194(84)90044-9

Reservoirs for Aphidius ervi Haliday (Hymenoptera: Aphidiidae), a polyphagous parasitoid of cereal aphids (Hemiptera: Aphididae)

A - Papers appearing in refereed journals

Cameron, P. J., Powell, W. and Loxdale, H. D. 1984. Reservoirs for Aphidius ervi Haliday (Hymenoptera: Aphidiidae), a polyphagous parasitoid of cereal aphids (Hemiptera: Aphididae). Bulletin of Entomological Research. 74 (4), pp. 647-656. https://doi.org/10.1017/S0007485300014024

Rothamsted Multidisciplinary Agronomy

A - Papers appearing in refereed journals

Thorne, G. N., Dewar, A. M., Prew, R. D., williams, Lacey, J., Plumb, R. T., Hirsch, P. R., Church, B. M. and Todd, A. D. 1983. Rothamsted Multidisciplinary Agronomy. Rothamsted Experimental Station Report. 1983 (part 1), pp. 21-36.

The role of parasitoids in limiting cereal aphid populations

B - Book chapters etc edited externally

Powell, W. 1983. The role of parasitoids in limiting cereal aphid populations. in: Cavalloro, R. (ed.) Rotterdam, Netherlands A.A. Balkema. pp. 50-56

The reactions of two cereal aphid parasitoids, aphidius-uzbekistanicus and aphidius-ervi to host aphids and their food-plants

A - Papers appearing in refereed journals

Powell, W. and Zhang, Z. L. 1983. The reactions of two cereal aphid parasitoids, aphidius-uzbekistanicus and aphidius-ervi to host aphids and their food-plants. Physiological Entomology. 8 (4), pp. 439-443. https://doi.org/10.1111/j.1365-3032.1983.tb00378.x

Effects of eight factors on the growth and nutrient-uptake of winter-wheat and on the incidence of pests and diseases

A - Papers appearing in refereed journals

Prew, R. D., Church, B. M., Dewar, A. M., Lacey, J., Penny, A., Plumb, R. T., Thorne, G. N., Todd, A. D. and Williams, T. D. 1983. Effects of eight factors on the growth and nutrient-uptake of winter-wheat and on the incidence of pests and diseases. The Journal of Agricultural Science. 100 (2), pp. 363-382. https://doi.org/10.1017/s0021859600033529

The effects of barley yellow dwarf virus, aphids and honeydew on Cladosporium infection of winter wheat and barley

A - Papers appearing in refereed journals

Ajayi, O. and Dewar, A. M. 1983. The effects of barley yellow dwarf virus, aphids and honeydew on Cladosporium infection of winter wheat and barley. Annals of Applied Biology - AAB. 102 (1), pp. 57-65. https://doi.org/10.1111/j.1744-7348.1983.tb02665.x

The effect of barley yellow dwarf virus on field populations of the cereal aphids, Sitobion avenae and Metopolophium dirhodum

A - Papers appearing in refereed journals

Ajayi, O. and Dewar, A. M. 1983. The effect of barley yellow dwarf virus on field populations of the cereal aphids, Sitobion avenae and Metopolophium dirhodum. Annals of Applied Biology - AAB. 103 (1), pp. 1-11. https://doi.org/10.1111/j.1744-7348.1983.tb02734.x

The role of parasitoids in limiting cereal aphid populations

A - Papers appearing in refereed journals

Powell, W. 1982. The role of parasitoids in limiting cereal aphid populations. Aphid antagonists. Proceedings of a meeting of the EC Experts' Group, Portici, Italy, 23-24 November 1982. pp. 50-56.

The identification of hymenopterous parasitoids attacking cereal aphids in Britain

A - Papers appearing in refereed journals

Powell, W. 1982. The identification of hymenopterous parasitoids attacking cereal aphids in Britain. Systematic Entomology. 7 (4), pp. 465-473. https://doi.org/10.1111/j.1365-3113.1982.tb00457.x

Assessment of methods for estimating the numbers of aphids (hemiptera, aphididae) in cereals

A - Papers appearing in refereed journals

Dewar, A. M., Dean, G. J. and Cannon, R. 1982. Assessment of methods for estimating the numbers of aphids (hemiptera, aphididae) in cereals. Bulletin of Entomological Research. 72 (4), pp. 675-685. https://doi.org/10.1017/s0007485300008701

The effect of barley yellow dwarf virus on honeydew production by the cereal aphids Sitobion avenae and Metopolophium dirhodum

A - Papers appearing in refereed journals

Ajayi, O. and Dewar, A. M. 1982. The effect of barley yellow dwarf virus on honeydew production by the cereal aphids Sitobion avenae and Metopolophium dirhodum. Annals of Applied Biology - AAB. 100 (2), pp. 203-212. https://doi.org/10.1111/j.1744-7348.1982.tb01932.x

Forecasting outbreaks of the English grain aphid, Sitobion avenae, with the aid of a simulation model

A - Papers appearing in refereed journals

Carter, N. and Dewar, A. M. 1981. Forecasting outbreaks of the English grain aphid, Sitobion avenae, with the aid of a simulation model. Mededelingen - Faculteit Landbouwwetenschappen Rijksuniversiteit Gent. 46 (2), pp. 605-612.

The relative abundance of the hymenopterous parasites attacking metopolophium-dirhodum (walker) and sitobion-avenae (f) (hemiptera, aphididae) on cereals during 1973-79 in southern England

A - Papers appearing in refereed journals

Dean, G. J., Jones, M. G. and Powell, W. 1981. The relative abundance of the hymenopterous parasites attacking metopolophium-dirhodum (walker) and sitobion-avenae (f) (hemiptera, aphididae) on cereals during 1973-79 in southern England. Bulletin of Entomological Research. 71 (2), pp. 307-315. https://doi.org/10.1017/s0007485300008336

Toxares deltiger (Haliday) (Hymenoptera: Aphidiidae) parasiting the cereal aphid, Metopolophium dirhodum (Walker) (Hemiptera: Aphididae), in southern England: a new host-parasitoid record

A - Papers appearing in refereed journals

Powell, W. 1980. Toxares deltiger (Haliday) (Hymenoptera: Aphidiidae) parasiting the cereal aphid, Metopolophium dirhodum (Walker) (Hemiptera: Aphididae), in southern England: a new host-parasitoid record. Bulletin of Entomological Research. 70 (3), pp. 407-409. https://doi.org/10.1017/s0007485300007665

Aerial migrations of the rose-grain aphid, metopolophium-dirhodum (wlk), over Europe in 1979

A - Papers appearing in refereed journals

Dewar, A. M., Woiwod, I. P. and Dejanvry, E. C. 1980. Aerial migrations of the rose-grain aphid, metopolophium-dirhodum (wlk), over Europe in 1979. Plant Pathology. 29 (3), pp. 101-109. https://doi.org/10.1111/j.1365-3059.1980.tb01192.x