Screening the ability of rice roots to overcome the mechanical impedance of wax layers: importance of test conditions and measured criteria

Clark, L. J., Aphale, S. L. and Barraclough, P. B. 2000. Screening the ability of rice roots to overcome the mechanical impedance of wax layers: importance of test conditions and measured criteria. Plant and Soil. 219 (1-2), pp. 187-196. https://doi.org/10.1023/A:1004753900945

Related outputs

Genotypic variation in the uptake, partitioning and remobilisation of nitrogen during grain-filling in wheat

A - Papers appearing in refereed journals

Barraclough, P. B., Lopez-Bellido, R. and Hawkesford, M. J. 2014. Genotypic variation in the uptake, partitioning and remobilisation of nitrogen during grain-filling in wheat. Field Crops Research. 156, pp. 242-248. https://doi.org/10.1016/j.fcr.2013.10.004

An overview of fertilizer-P recommendations in Europe: soil testing, calibration and fertilizer recommendations

A - Papers appearing in refereed journals

Jordan-Meille, L., Rubaek, G. H., Ehlert, P. A. I., Genot, V., Hofman, G., Goulding, K. W. T., Recknagel, J., Provolo, G. and Barraclough, P. B. 2012. An overview of fertilizer-P recommendations in Europe: soil testing, calibration and fertilizer recommendations. Soil Use and Management. 28 (4), pp. 419-435. https://doi.org/10.1111/j.1475-2743.2012.00453.x

Molecular and physiological basis of nutrient use efficiency in crops

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

Hawkesford, M. J. and Barraclough, P. B. 2011. Molecular and physiological basis of nutrient use efficiency in crops. John Wiley & Sons Chichester, West Sussex.

Drought stress, effect on soil mechanical impedance and root (crop) growth

G - Articles in popular magazines and other technical publications

Whalley, W. R. and Clark, L. J. 2011. Drought stress, effect on soil mechanical impedance and root (crop) growth.

Nitrogen efficiency of wheat: genotypic and environmental variation and prospects for improvement

A - Papers appearing in refereed journals

Barraclough, P. B., Howarth, J. R., Jones, J., Lopez-Bellido, R., Parmar, S., Shepherd, C. E. and Hawkesford, M. J. 2010. Nitrogen efficiency of wheat: genotypic and environmental variation and prospects for improvement. European Journal of Agronomy. 33, pp. 1-11. https://doi.org/10.1016/j.eja.2010.01.005

Linking plant biology and soil physics to understand hillslope hydrology

C2 - Non-edited contributions to conferences

Macleod, C. J. A., Binley, A., Clark, L. J., Gregory, A. S., Hawkins, S. L., Humphreys, M., Joynes, A., Papdopoulos, A., Skot, L., Stone, A., Turner, L. B., Watts, C. W., Webster, C. P., Whalley, W. R. and Haygarth, P. M. 2009. Linking plant biology and soil physics to understand hillslope hydrology. Abstracts European Geophysical Union General Assembly, Vienna, 19-24 April 2009 .

Identifying traits to improve the nitrogen economy of wheat: recent advances and future prospects

A - Papers appearing in refereed journals

Foulkes, M. J., Hawkesford, M. J., Barraclough, P. B., Holdsworth, M. J., Kerr, S., Kightley, S. and Shewry, P. R. 2009. Identifying traits to improve the nitrogen economy of wheat: recent advances and future prospects. Field Crops Research. 114, pp. 329-342. https://doi.org/10.1016/j.fcr.2009.09.005

A sulphur deficiency-induced gene, sdi1 , involved in the utilization of stored sulphate pools under sulphur-limiting conditions has potential as a diagnostic indicator of sulphur nutritional status

A - Papers appearing in refereed journals

Howarth, J. R., Parmar, S., Barraclough, P. B. and Hawkesford, M. J. 2009. A sulphur deficiency-induced gene, sdi1 , involved in the utilization of stored sulphate pools under sulphur-limiting conditions has potential as a diagnostic indicator of sulphur nutritional status. Plant Biotechnology Journal. 7 (2), pp. 200-209. https://doi.org/10.1111/j.1467-7652.2008.00391.x

Evidence from near-isogenic lines that root penetration increases with root diameter and bending stiffness in rice

A - Papers appearing in refereed journals

Clark, L. J., Price, A. H., Steele, K. A. and Whalley, W. R. 2008. Evidence from near-isogenic lines that root penetration increases with root diameter and bending stiffness in rice. Functional Plant Biology. 35, pp. 1163-1171. https://doi.org/10.1071/FP08132

Co-ordinated expression of amino acid metabolism in response to N and S deficiency during wheat grain filling

A - Papers appearing in refereed journals

Howarth, J. R., Parmar, S., Jones, J., Shepherd, C. E., Corol, D. I., Galster, A. M., Hawkins, N. D., Miller, S. J., Baker, J. M., Verrier, P. J., Ward, J. L., Beale, M. H., Barraclough, P. B. and Hawkesford, M. J. 2008. Co-ordinated expression of amino acid metabolism in response to N and S deficiency during wheat grain filling. Journal of Experimental Botany. 59, pp. 3675-3689. https://doi.org/10.1093/jxb/ern218

A gradual rather than abrupt increase in soil strength gives better root penetration of strong layers

A - Papers appearing in refereed journals

Clark, L. J., Ferraris, S., Price, A. H. and Whalley, W. R. 2008. A gradual rather than abrupt increase in soil strength gives better root penetration of strong layers. Plant and Soil. 307, pp. 235-242. https://doi.org/10.1007/s11104-008-9602-8

The effect of soil strength on yield of wheat

A - Papers appearing in refereed journals

Whalley, W. R., Watts, C. W., Gregory, A. S., Mooney, S. J., Clark, L. J. and Whitmore, A. P. 2008. The effect of soil strength on yield of wheat. Plant and Soil. 306, pp. 237-247. https://doi.org/10.1007/s11104-008-9577-5

An agronomic and physiological re-evaluation of the potassium and sodium requirements and fertilizer recommendations for sugar beet

A - Papers appearing in refereed journals

Milford, G. F. J., Jarvis, P. J., Jones, J. and Barraclough, P. B. 2008. An agronomic and physiological re-evaluation of the potassium and sodium requirements and fertilizer recommendations for sugar beet. The Journal of Agricultural Science. 146, pp. 429-443. https://doi.org/10.1017/S0021859607007630

Nitrogen use efficiency and resource allocation in wheat

C2 - Non-edited contributions to conferences

Hawkesford, M. J., Howarth, J. R. and Barraclough, P. B. 2007. Nitrogen use efficiency and resource allocation in wheat. Abstracts 4th UK Small Grain Cereals Genetic and Genomics Workshop: From Genes to Traits, Cambridge, 14-16 March 2007 .

A porous-matrix sensor to measure the matric potential of soil water in the field

A - Papers appearing in refereed journals

Whalley, W. R., Clark, L. J., Take, W. A., Bird, N. R. A., Leech, P. K., Cope, R. E. and Watts, C. W. 2007. A porous-matrix sensor to measure the matric potential of soil water in the field. European Journal of Soil Science. 58 (1), pp. 18-25. https://doi.org/10.1111/j.1365-2389.00790.x

Effects of soil compaction and irrigation on the concentrations of selenium and arsenic in wheat grains

A - Papers appearing in refereed journals

Zhao, F-J., Lopez-Bellido, F. J., Gray, C. W., Whalley, W. R., Clark, L. J. and McGrath, S. P. 2007. Effects of soil compaction and irrigation on the concentrations of selenium and arsenic in wheat grains. Science of the Total Environment. 372, pp. 433-439. https://doi.org/10.1016/j.scitotenv.2006.09.028

Genetically modified hydrographs: what can grass genetics do for temperate catchment hydrology?

C2 - Non-edited contributions to conferences

Macleod, C. J. A., Binley, A., Clark, L. J., Hawkins, S. L., Humphreys, M. W., King, I. P., Scholefield, D., Turner, L. B., Whalley, W. R. and Haygarth, P. M. 2007. Genetically modified hydrographs: what can grass genetics do for temperate catchment hydrology? European Geosciences Union, General Assembly 2007, Vienna, Austria, 16-20 April 2007.

Genetically modified hydrographs: what can grass genetics do for temperate catchment hydrology?

A - Papers appearing in refereed journals

Macleod, C. J. A., Binley, A., Clark, L. J., Hawkins, S. L., Humphreys, M. W., Turner, L. B., Whalley, W. R. and Haygarth, P. M. 2007. Genetically modified hydrographs: what can grass genetics do for temperate catchment hydrology? Hydrological Processes. 21 (16), pp. 2217-2221. https://doi.org/10.1002/hyp.6780

Grass roots to improve the management of soil-water

C1 - Edited contributions to conferences/learned societies

Humphreys, M. W., Binley, A., Clark, L. J., Hawkins, S. L., King, I. P., Macleod, C. J. A., Turner, L. B., Whalley, W. R. and Haygarth, P. M. 2007. Grass roots to improve the management of soil-water. Hopkins, J. J., Duncan, A. J., McCracken, D. I., Peel, S. and Tallowin, J. R. B. (ed.) 'High Value Grassland: providing biodiversity, a clean environment and premium products': Proceedings BGS/BES/BSAS Conference, Keele University, Staffs, 17-19 April 2007. British Grassland Society Occasional Symposium, 38. pp. 249-252

The role of clay, organic carbon and long-term management on mouldboard plough draught measured on the Broadbalk wheat experiment at Rothamsted

A - Papers appearing in refereed journals

Watts, C. W., Clark, L. J., Poulton, P. R., Powlson, D. S. and Whitmore, A. P. 2006. The role of clay, organic carbon and long-term management on mouldboard plough draught measured on the Broadbalk wheat experiment at Rothamsted. Soil Use and Management. 22 (4), pp. 334-341. https://doi.org/10.1111/j.1475-2743.2006.00054.x

Does soil strength play a role in wheat yield losses caused by soil drying?

A - Papers appearing in refereed journals

Whalley, W. R., Clark, L. J., Gowing, D. J. G., Cope, R. E., Lodge, R. J. and Leeds-Harrison, P. B. 2006. Does soil strength play a role in wheat yield losses caused by soil drying? Plant and Soil. 280, pp. 279-290. https://doi.org/10.1007/s11104-005-3485-8

Mechanical impedance and nutrient acquisition in rice

A - Papers appearing in refereed journals

Brown, D. A., Clark, L. J., Howarth, J. R., Parmar, S. and Hawkesford, M. J. 2006. Mechanical impedance and nutrient acquisition in rice. Plant and Soil. 280, pp. 65-76. https://doi.org/10.1007/s11104-005-2508-9

Diagnosing nitrogen status of wheat cultivars for yield and quality

C1 - Edited contributions to conferences/learned societies

Barraclough, P. B., Shepherd, C. and Svecnjak, Z. 2005. Diagnosing nitrogen status of wheat cultivars for yield and quality. Li, C. J. (ed.) Plant Nutrition for Food Security, Human Health and Environmental Protection. Proceedings 15th International Plant Nutrition Colloquium, Beijing, 14-19 September 2005 . Tsinghua University Press, Beijing. pp. 878-879

The potassium requirements of modern UK sugar beet crops and use of factory data to improve on the use of potassium fertilisers

C1 - Edited contributions to conferences/learned societies

Jarvis, P. J., Milford, G. F. J., Jones, J. and Barraclough, P. B. 2005. The potassium requirements of modern UK sugar beet crops and use of factory data to improve on the use of potassium fertilisers. Production and Protection of Sugar Beet and Potatoes. Aspects of Applied Biology 76 . pp. 47-54

Transcriptome analysis of wheat responses to sulfur nutrition

B - Book chapters etc edited externally

Lu, C., Howarth, J. R., Barraclough, P. B. and Edwards, K. J. 2005. Transcriptome analysis of wheat responses to sulfur nutrition. in: Hawkesford, M. J., Rennenberg, H., Sirko, A., Schnug, E., Saito, K., Stulen, I. and Dekok, L. J. (ed.) Sulfur transport and assimilation in plants in the postgenomic era Backhuys Publishers, Leiden Netherlands. pp. 157-160

A highly specific sulfate-deficiency induced gene (sdi1) from wheat

B - Book chapters etc edited externally

Howarth, J. R. and Barraclough, P. B. 2005. A highly specific sulfate-deficiency induced gene (sdi1) from wheat. in: Hawkesford, M. J., Rennenberg, H., Sirko, A., Schnug, E., Saito, K., Stulen, I. and Dekok, L. J. (ed.) Sulfur transport and assimilation in plants in the postgenomic era Backhuys Publishers, Leiden Netherlands. pp. 161-164

Microarray analysis of wheat grain transcriptome under nitrogen and sulphur deficiency

C2 - Non-edited contributions to conferences

Hawkesford, M. J., Lu, C., Howarth, J. R., Barraclough, P. B. and Edwards, K. J. 2005. Microarray analysis of wheat grain transcriptome under nitrogen and sulphur deficiency. Li, C. J. (ed.) Plant Nutrition for Food Security, Human Health and Environmental Protection. Proceedings 15th International Plant Nutrition Colloquium, Beijing, 14-19 September 2005 . Tsinghua University Press, Beijing. pp. 80-81

Adverse effects of simulated harvesting of short-rotation willow and poplar coppice on vertical pressures and rut depths

A - Papers appearing in refereed journals

Watts, C. W., Clark, L. J., Chamen, W. C. T. and Whitmore, A. P. 2005. Adverse effects of simulated harvesting of short-rotation willow and poplar coppice on vertical pressures and rut depths. Soil & Tillage Research. 84 (2), pp. 192-199. https://doi.org/10.1016/j.still.2004.11.012

Sensing the physical and nutritional status of the root environment in the field: a review of progress and opportunities

A - Papers appearing in refereed journals

Clark, L. J., Gowing, D. J. G., Lark, R. M., Leeds-Harrison, P. B., Miller, A. J., Wells, D. M., Whalley, W. R. and Whitmore, A. P. 2005. Sensing the physical and nutritional status of the root environment in the field: a review of progress and opportunities. The Journal of Agricultural Science. 143, pp. 347-358. https://doi.org/10.1017/S0021859605005253

Markedly different gene expression in wheat grown with organic or inorganic fertilizer

A - Papers appearing in refereed journals

Lu, C., Hawkesford, M. J., Barraclough, P. B., Poulton, P. R., Wilson, I. D., Barker, G. L. and Edwards, K. J. 2005. Markedly different gene expression in wheat grown with organic or inorganic fertilizer. Proceedings of the Royal Society of London Series B Biological Sciences. 272 (1575), pp. 1901-1908. https://doi.org/10.1098/rspb.2005.3161

Establishing the potassium requirements of modern, high-yielding sugar beet crops for yield and beet quality. (Final report for British Beet Research Organisation project 00/25)

D1 - Technical reports: non-confidential

Jarvis, P., Barraclough, P. B., Jones, J. and Milford, G. F. J. 2004. Establishing the potassium requirements of modern, high-yielding sugar beet crops for yield and beet quality. (Final report for British Beet Research Organisation project 00/25).

Predicting post-anthesis N requirements of bread wheat with a Minolta SPAD meter

A - Papers appearing in refereed journals

Lopez-Bellido, R. J., Shepherd, C. E. and Barraclough, P. B. 2004. Predicting post-anthesis N requirements of bread wheat with a Minolta SPAD meter. European Journal of Agronomy. 20, pp. 313-320.

Genomics and the Rothamsted Classical Experiments

G - Articles in popular magazines and other technical publications

Hawkesford, M. J., Barraclough, P. B., Howarth, J. R., Lu, C. and Edwards, K. J. 2003. Genomics and the Rothamsted Classical Experiments. Rothamsted Research Annual Report. 2002-2003, pp. 36-39.

Recent research on potassium and sodium recommendations for sugar beet

G - Articles in popular magazines and other technical publications

Jarvis, P., Milford, G. F. J., Armstrong, M. and Barraclough, P. B. 2003. Recent research on potassium and sodium recommendations for sugar beet. British Sugar Beet Review. 71(4), pp. 4-9.

P nutrition of winter oilseed rape (HGCA Topic Sheet No. 67)

G - Articles in popular magazines and other technical publications

Barraclough, P. B. 2003. P nutrition of winter oilseed rape (HGCA Topic Sheet No. 67).

Novel sensors for measuring soil nitrogen, water availability and strength

C1 - Edited contributions to conferences/learned societies

Miller, A. J., Wells, D. M., Braven, J., Ebdon, L., Le Goff, T., Clark, L. J., Whalley, W. R., Gowing, D. J. G. and Leeds-Harrison, P. B. 2003. Novel sensors for measuring soil nitrogen, water availability and strength. Proceedings BCPC International Congress - Crop Science and Technology, Glasgow, 10-12 November 2003 . pp. 1107-1114

How do roots penetrate strong soil?

A - Papers appearing in refereed journals

Clark, L. J., Whalley, W. R. and Barraclough, P. B. 2003. How do roots penetrate strong soil? Plant and Soil. 255, pp. 93-104.

Measuring inorganic orthophosphate in oilseed rape using reflectoquant technology

A - Papers appearing in refereed journals

Major, B. J. and Barraclough, P. B. 2003. Measuring inorganic orthophosphate in oilseed rape using reflectoquant technology. Communications in Soil Science and Plant Analysis. 34, pp. 2839-2851.

Plant and soil testing to assess the adequacy of phosphorus supply to winter oilseed rape (H-GCA Oilseeds Project Report No OS58)

D1 - Technical reports: non-confidential

Barraclough, P. B. and Major, B. J. 2002. Plant and soil testing to assess the adequacy of phosphorus supply to winter oilseed rape (H-GCA Oilseeds Project Report No OS58). Home Grown Cereals Authority (HGCA) London.

Root penetration of strong soil in rainfed lowland rice: comparison of laboratory screens with field performance

A - Papers appearing in refereed journals

Clark, L. J., Cope, R. E., Whalley, W. R., Barraclough, P. B. and Wade, L. J. 2002. Root penetration of strong soil in rainfed lowland rice: comparison of laboratory screens with field performance. Field Crops Research. 76, pp. 189-198. https://doi.org/10.1016/S0378-4290(02)00039-4

Critical phosphate (P) and inorganic phosphate (Pi) concentrations for the growth of winter oilseed rape (Brassica napus )

C1 - Edited contributions to conferences/learned societies

Major, B. J. and Barraclough, P. B. 2001. Critical phosphate (P) and inorganic phosphate (Pi) concentrations for the growth of winter oilseed rape (Brassica napus ). Horst, W. J. (ed.) Plant nutrition - food security and sustainability of agro-ecosystems . Kluwer Academic Publishers, Dordrecht, Netherlands. pp. 714-715

Effect of water stress on chlorophyll meter readings in winter wheat.

C1 - Edited contributions to conferences/learned societies

Barraclough, P. B. and Kyte, J. 2001. Effect of water stress on chlorophyll meter readings in winter wheat. Horst, W. J. (ed.) Plant nutrition - food security and sustainability of agro-ecosystems . Kluwer Academic Publishers, Dordrecht, Netherlands. pp. 722-723

Phosphorus requirements of winter wheat and winter oilseed rape

G - Articles in popular magazines and other technical publications

Barraclough, P. B. and Major, B. J. 2001. Phosphorus requirements of winter wheat and winter oilseed rape. ARIA newsletter. Issue 4.

Unlocking soil phosphorus with the help of P efficient wheat varieties from China

G - Articles in popular magazines and other technical publications

Gordon-Weeks, R., Davies, T. G. E. and Barraclough, P. B. 2001. Unlocking soil phosphorus with the help of P efficient wheat varieties from China. BBSRC Business. January 2001, pp. 20-21.

Partial mechanical impedance can increase the turgor of seedling pea roots

A - Papers appearing in refereed journals

Clark, L. J., Whalley, W. R. and Barraclough, P. B. 2001. Partial mechanical impedance can increase the turgor of seedling pea roots. Journal of Experimental Botany. 52, pp. 167-171.

Development of on-farm tests for phosphate and potassium in wheat. (HGCA Project Report No. 224)

D1 - Technical reports: non-confidential

Barraclough, P. B., Bollons, H. M., Chambers, B. J., Bhogal, A. and Hatley, D. 2000. Development of on-farm tests for phosphate and potassium in wheat. (HGCA Project Report No. 224). Home Grown Cereals Authority (HGCA) London.

A combined RFLP and AFLP linkage map of upland rice (Oryza sativa L.) used to identify QTLs for root-penetration ability

A - Papers appearing in refereed journals

Price, A. H., Steele. K. A., Moore, B. J., Barraclough, P. B. and Clark, L. J. 2000. A combined RFLP and AFLP linkage map of upland rice (Oryza sativa L.) used to identify QTLs for root-penetration ability. Theoretical and Applied Genetics. 100 (1), pp. 49-56. https://doi.org/10.1007/s001220050007

How should plant breeders screen for rice root growth through strong soil?

G - Articles in popular magazines and other technical publications

Clark, L. J., Whalley, W. R., Price, A. H., Wade, L. J. and Barraclough, P. B. 1999. How should plant breeders screen for rice root growth through strong soil?

Screening rice root growth under mechanical impedance. Final Technical Report of DFID Project No. R6373

D1 - Technical reports: non-confidential

Clark, L. J., Whalley, W. R., Dexter, A. R. and Barraclough, P. B. 1999. Screening rice root growth under mechanical impedance. Final Technical Report of DFID Project No. R6373.

Assessing the phosphorus status of winter wheat crops: inorganic orthophosphate in whole shoots

A - Papers appearing in refereed journals

Bollons, H. M. and Barraclough, P. B. 1999. Assessing the phosphorus status of winter wheat crops: inorganic orthophosphate in whole shoots. The Journal of Agricultural Science. 133, pp. 285-295. https://doi.org/10.1017/S0021859699007066

Do dicotyledons generate greater maximum axial root growth pressures than monocotyledons?

A - Papers appearing in refereed journals

Clark, L. J. and Barraclough, P. B. 1999. Do dicotyledons generate greater maximum axial root growth pressures than monocotyledons? Journal of Experimental Botany. 50 (336), pp. 1263-1266. https://doi.org/10.1093/jxb/50.336.1263

Maximum axial root growth pressure in pea seedlings: effects of measurement techniques and cultivars

A - Papers appearing in refereed journals

Clark, L. J., Bengough, A. G., Whalley, W. R., Dexter, A. R. and Barraclough, P. B. 1999. Maximum axial root growth pressure in pea seedlings: effects of measurement techniques and cultivars. Plant and Soil. 209, pp. 101-109.

Evaluation of agar and agarose gels for studying mechanical impedance in rice roots

A - Papers appearing in refereed journals

Clark, L. J., Whalley, W. R., Leigh, R. A., Dexter, A. R. and Barraclough, P. B. 1999. Evaluation of agar and agarose gels for studying mechanical impedance in rice roots. Plant and Soil. 207, pp. 37-43.

Diagnosing P and K requirements of winter wheat (HGCA Topic Sheet No. 19)

G - Articles in popular magazines and other technical publications

Barraclough, P. B. 1998. Diagnosing P and K requirements of winter wheat (HGCA Topic Sheet No. 19).

Assessment of some spatially variable soil factors limiting crop yields (Proceedings International Fertiliser Society No. 419)

C1 - Edited contributions to conferences/learned societies

Johnston, A. E., Barraclough, P. B., Poulton, P. R. and Dawson, C. J. 1998. Assessment of some spatially variable soil factors limiting crop yields (Proceedings International Fertiliser Society No. 419). International Fertiliser Society, York. pp. 46pp

New developments: possibilities for diagnosing the K response in crops

G - Articles in popular magazines and other technical publications

Barraclough, P. B. 1998. New developments: possibilities for diagnosing the K response in crops. FACTS-TIS. 1, p. 3.

Phosphorus matters

G - Articles in popular magazines and other technical publications

Barraclough, P. B. 1998. Phosphorus matters. National Farm Waste Management Register Newsletter. No. 1, p. 3.

Optimising P and K use on winter wheat: plant and soil testing

G - Articles in popular magazines and other technical publications

Barraclough, P. B. 1998. Optimising P and K use on winter wheat: plant and soil testing.

Diagnosing the adequacy of P and K supply to wheat crops by soil and plant analysis

G - Articles in popular magazines and other technical publications

Barraclough, P. B. 1998. Diagnosing the adequacy of P and K supply to wheat crops by soil and plant analysis. ARIA newsletter. 1998, pp. 34-38.

P and K assessment and fertiliser use

C1 - Edited contributions to conferences/learned societies

Barraclough, P. B., Bollons, H. M. and Chambers, B. J. 1998. P and K assessment and fertiliser use. Management through Understanding: Research into Practice. Proceedings 6th H-GCA R&D Conference on Cereals and Oilseeds, Cambridge, 8-9 January 1998 . Home Grown Cereals Authority (HGCA) London. pp. 7.1-7.11

Use of field diagnostics to improve predictions of nitrogen dynamics in arable land

C1 - Edited contributions to conferences/learned societies

Smith, J. U. and Barraclough, P. B. 1997. Use of field diagnostics to improve predictions of nitrogen dynamics in arable land. Lemaire, G. and Burns, I. G. (ed.) Diagnostic Procedures for Crop N Management. INRA Colloquium 82 . Institut National de la Recherche Agronomique (INRA), Paris. pp. 81-91

Plant testing for assessing the adequacy of P supply in winter wheat crops

C1 - Edited contributions to conferences/learned societies

Bollons, H. M., Barraclough, P. B. and Chambers, B. J. 1997. Plant testing for assessing the adequacy of P supply in winter wheat crops. Optimising Cereal Inputs: its Scientific Basis. Aspects of Applied Biology 50 .

Stored nitrate for diagnosing N sufficiency in wheat crops

C1 - Edited contributions to conferences/learned societies

Barraclough, P. B. and Pearman, I. 1997. Stored nitrate for diagnosing N sufficiency in wheat crops. Ando, T. (ed.) Plant Nutrition for Sustainable Food Production and Environment: Proceedings 13th International Plant Nutrition Colloquium, Tokyo, September 1997 . Kluwer Academic Publishers, Dordrecht, Netherlands. pp. 33-35

Plant testing to determine the P and K status of wheat. Home-Grown Cereals Authority Project Report 137

D1 - Technical reports: non-confidential

Barraclough, P. B., Bollons, H. M., Chambers, B. J., Hatley, D. and Moss, D. P. 1997. Plant testing to determine the P and K status of wheat. Home-Grown Cereals Authority Project Report 137. H-GCA, London.

N requirement of winter wheat and diagnosis of deficiency

C1 - Edited contributions to conferences/learned societies

Barraclough, P. B. 1997. N requirement of winter wheat and diagnosis of deficiency. Optimising Cereal Inputs: its Scientific Basis. Aspects of Applied Biology 50 .

Inorganic orthophosphate for diagnosing the phosphorus status of wheat plants

A - Papers appearing in refereed journals

Bollons, H. M. and Barraclough, P. B. 1997. Inorganic orthophosphate for diagnosing the phosphorus status of wheat plants. Journal of Plant Nutrition. 20, pp. 641-655.

Analysis of monoterpenoids in glandular trichomes of the catmint Nepeta racemosa

A - Papers appearing in refereed journals

Clark, L. J., Hamilton, J. G. C., Chapman, J. V., Rhodes, M. J. C. and Hallahan, D. L. 1997. Analysis of monoterpenoids in glandular trichomes of the catmint Nepeta racemosa. The Plant Journal. 11 (6), pp. 1387-1393. https://doi.org/10.1046/j.1365-313X.1997.11061387.x

Evaluation of techniques for screening the ability of rice roots to grow against mechanical impedance

C2 - Non-edited contributions to conferences

Clark, L. J., Whalley, W. R., Cope, R. E., Aphale, S. L., Barraclough, P. B., Dexter, A. R. and Leigh, R. A. 1997. Evaluation of techniques for screening the ability of rice roots to grow against mechanical impedance. Abstracts 2nd Tansley Conference Putting Plant Physiology On The Map, Bangor, 1-3 April 1997 . pp. 12

Elemental sulphur as a fertiliser for temperate crops. Confidential report commissioned by Hydro-Agri GmBH

D1 - Technical reports: non-confidential

Barraclough, P. B. 1996. Elemental sulphur as a fertiliser for temperate crops. Confidential report commissioned by Hydro-Agri GmBH.

The effect of foliar supplements of potassium nitrate and urea on the yield of winter wheat

A - Papers appearing in refereed journals

Barraclough, P. B. and Haynes, J. 1996. The effect of foliar supplements of potassium nitrate and urea on the yield of winter wheat. Fertilizer Research. 44, pp. 217-223.

Development and essential oil accumulation in glandular trichomes of catmint (Nepeta racemosa )

C2 - Non-edited contributions to conferences

Clark, L. J., Hallahan, D. L., Bourett, T. M., Howard, R. J. and Hamilton, J. G. C. 1996. Development and essential oil accumulation in glandular trichomes of catmint (Nepeta racemosa ). Abstracts SEB Meeting on Control of Plant Development: Genes and Signals, Dublin, 21-25 July 1996 . pp. P21

The effect of mechanical impedance on root growth in rice

C2 - Non-edited contributions to conferences

Clark, L. J., Whalley, W. R., Cope, R. E., Dexter, A. R., Barraclough, P. B. and Leigh, R. A. 1996. The effect of mechanical impedance on root growth in rice. Abstracts 5th Symposium of the International Society of Root Research, Clemson, 14-18 July 1996 . pp. 139

Complete mechanical impedance increases the turgor of cells in the apex of pea roots

A - Papers appearing in refereed journals

Clark, L. J., Whalley, W. R., Dexter, A. R., Barraclough, P. B. and Leigh, R. A. 1996. Complete mechanical impedance increases the turgor of cells in the apex of pea roots. Plant, Cell and Environment. 19 (9), pp. 1099-1102. https://doi.org/10.1111/j.1365-3040.1996.tb00217.x

Physiological and cellular basis for the growth of rice roots through compacted soil

D1 - Technical reports: non-confidential

Clark, L. J., Barraclough, P. B., Leigh, R. A., Whalley, W. R. and Dexter, A. R. 1994. Physiological and cellular basis for the growth of rice roots through compacted soil. Overseas Development Administration (ODA) London.

The temperature-dependence of the maximum axial growth pressure of roots of pea (Pisum sativum L.)

A - Papers appearing in refereed journals

Whalley, W. R., Clark, L. J. and Dexter, A. R. 1994. The temperature-dependence of the maximum axial growth pressure of roots of pea (Pisum sativum L.). Plant and Soil. 163, pp. 211-215.

Sulphur, phosphorus, potassium and copper - measuring crop needs, impacts on quality and options for management

C1 - Edited contributions to conferences/learned societies

McGrath, S. P., Zhao, F-J., Barraclough, P. B., Chambers, B., Withers, P. and Sinclair, A. 1994. Sulphur, phosphorus, potassium and copper - measuring crop needs, impacts on quality and options for management. Proceedings Cereals R & D Conference, 1994 . Home Grown Cereals Authority (HGCA) London. pp. 6.1-6.28

SCI Agriculture and Environment Group Symposium: novel aspects of crop nutrition

A - Papers appearing in refereed journals

Barraclough, P. B., Grindlay, D. J. C., Sylvester, B. R., Scott, R. K., Dampney, P. M. R., Wallace, P. A., Withers, P. J. A., Zhao, F-J., McGrath, S. P., Luong, H., Booth, E. J., Walker, K. C., Till, A. R., Sexton, J., Bennett, J., Reynolds, S. B., Hocking, T. J., Gooding, M. J., Smith, S. P., Davies, W. P, Spalding, P. C. J., Kettlewell, P. S., Warden, M. R., Johnson, P. A., Vaidyanathan, L. V., Lewis, D. J., Dawson, K. P., Cook, J. W., Parry, D. W., Whapham, C. A., Blunden, G., Jenkins, T., Hankins, S. D., Cogram, K. J., Steveni, C. M., Norrington-Davies, J., Chambers, B. J., Richardson, S. J., Dawson, C. J., Tye, A. M., Fullen, M. A., Daly, M., Seymour, G. B., Edwards, R. and Hobson, G. E. 1993. SCI Agriculture and Environment Group Symposium: novel aspects of crop nutrition. Journal of the Science of Food and Agriculture. 63 (1), pp. 115-132.

Critical plant K concentrations for growth and problems in the diagnosis of nutrient deficiencies by plant analysis

A - Papers appearing in refereed journals

Barraclough, P. B. and Leigh, R. A. 1993. Critical plant K concentrations for growth and problems in the diagnosis of nutrient deficiencies by plant analysis. Plant and Soil. 155/156, pp. 219-222.

Nutrient storage pool concentrations in plants as diagnostic indicators of nutrient sufficiency

A - Papers appearing in refereed journals

Barraclough, P. B. 1993. Nutrient storage pool concentrations in plants as diagnostic indicators of nutrient sufficiency. Plant and Soil. 155/156, pp. 175-178.

Nutrient storage pool concentrations in plants as diagnostic indicators of nutrient sufficiency

B - Book chapters etc edited externally

Barraclough, P. B. 1993. Nutrient storage pool concentrations in plants as diagnostic indicators of nutrient sufficiency. in: Barrow, N. J. (ed.) Plant nutrition - from genetic engineering to field practice Kluwer Academic Publishers, Dordrecht, Netherlands. pp. 195-198

The significance of nutrient concentrations in plant 'storage pools' for growth and yield

C2 - Non-edited contributions to conferences

Barraclough, P. B. 1993. The significance of nutrient concentrations in plant 'storage pools' for growth and yield.

Critical plant K concentrations for growth and problems in the diagnosis of nutrient deficiences by plant analysis

B - Book chapters etc edited externally

Barraclough, P. B. and Leigh, R. A. 1993. Critical plant K concentrations for growth and problems in the diagnosis of nutrient deficiences by plant analysis. in: Barrow, N. J. (ed.) Plant nutrition - from genetic engineering to field practice Kluwer Academic Publishers, Dordrecht, Netherlands. pp. 245-248

Grass yield in relation to potassium supply and the concentration of cations in tissue water

A - Papers appearing in refereed journals

Barraclough, P. B. and Leigh, R. A. 1993. Grass yield in relation to potassium supply and the concentration of cations in tissue water. The Journal of Agricultural Science. 121 (2), pp. 157-168. https://doi.org/10.1017/S0021859600077017

The feasibility of regulating nitrogen concentrations in agricultural soils. Report commissioned by Hydro-Agri GmbH

D1 - Technical reports: non-confidential

Barraclough, P. B. 1992. The feasibility of regulating nitrogen concentrations in agricultural soils. Report commissioned by Hydro-Agri GmbH.

Studies on the mechanism of sodium transport at the tonoplast of Beta vulgaris. PhD thesis, University of London

F - Theses

Clark, L. J. 1990. Studies on the mechanism of sodium transport at the tonoplast of Beta vulgaris. PhD thesis, University of London. F - Theses

The effects of drought and nitrogen on root growth and water uptake by winter wheat

C1 - Edited contributions to conferences/learned societies

Barraclough, P. B., Kuhlman, H. and Weir, A. H. 1990. The effects of drought and nitrogen on root growth and water uptake by winter wheat. Proceedings of the 1st Congress of the European Society of Agronomy, Paris, 1990. pp. 1-0-03

Modelling potassium uptake by wheat (Triticum aestivum) crops

C1 - Edited contributions to conferences/learned societies

Seward, P., Barraclough, P. B. and Gregory, P. J. 1990. Modelling potassium uptake by wheat (Triticum aestivum) crops.

Modelling K uptake by plants from soil.

C1 - Edited contributions to conferences/learned societies

Barraclough, P. B. 1990. Modelling K uptake by plants from soil. Proceedings of the 22nd Colloquium of the International Potash Institute, Soligorsk, USSR, 1990. International Potash Institute (IPI), Berne, Switzerland. pp. 217-230.

Effect of planting date and irrigation on soil temperature, soil water content, and maize root growth

C2 - Non-edited contributions to conferences

Kovar, J. L., Barraclough, P. B. and Barber, S. A. 1990. Effect of planting date and irrigation on soil temperature, soil water content, and maize root growth. Transations of the 14th International Congress of Soil Science, Kyoto, 1990 Vol VI.. pp. 251-252.

The effects of prolonged drought and nitrogen fertiliser on root and shoot growth and water uptake by winter wheat.

A - Papers appearing in refereed journals

Barraclough, P. B., Kuhlmann, H. and Weir, A. H. 1990. The effects of prolonged drought and nitrogen fertiliser on root and shoot growth and water uptake by winter wheat. Journal of Agronomy and Crop Science. 163 (5), pp. 352-360. https://doi.org/10.1111/j.1439-037X.1989.tb00778.x

Artefacts associated with the use of acridine orange to measure sodium/proton exchange in tonoplast vesicles.

B - Book chapters etc edited externally

Clark, L. J. and Leigh, R. A. 1989. Artefacts associated with the use of acridine orange to measure sodium/proton exchange in tonoplast vesicles. in: Plant membrane transport: the current position. J. Dainty, M.I. de Michelis, E. Marre & F. Rasi-Caldogno eds Elsevier, Amsterdam. pp. 207-208

The extent to which physical factors in the rooting zone limit crop growth.

C1 - Edited contributions to conferences/learned societies

Goss, M. J., Barraclough, P. B. and Powell, B. A. 1989. The extent to which physical factors in the rooting zone limit crop growth. Roots and the soil environment. Aspects of Applied Biology .

Root growth and nutrient uptake by field crops under temperate conditions.

C1 - Edited contributions to conferences/learned societies

Barraclough, P. B. 1989. Root growth and nutrient uptake by field crops under temperate conditions. Roots and the soil environment. Aspects of Applied Biology .

Utilization of mineral nitrogen in the subsoil by winter wheat.

A - Papers appearing in refereed journals

Kuhlmann, H., Barraclough, P. B. and Weir, A. H. 1989. Utilization of mineral nitrogen in the subsoil by winter wheat. Zeitschrift fur Pflanzenernahrung und Bodenkunde. 152 (3), pp. 291-295. https://doi.org/10.1002/jpln.19891520305

Root growth, macro-nutrient uptake dynamics and soil fertility requirements of a high-yielding winter oilseed rape crop.

A - Papers appearing in refereed journals

Barraclough, P. B. 1989. Root growth, macro-nutrient uptake dynamics and soil fertility requirements of a high-yielding winter oilseed rape crop. Plant and Soil. 119, pp. 59-70.

Recent advances in our understanding of the transport of nutrients across vacuolar membranes of plant cells. Agriculture Group Symposium : advances in plant nutrition.

C1 - Edited contributions to conferences/learned societies

Leigh, R. A., Pope, A. J. and Clark, L. J. 1988. Recent advances in our understanding of the transport of nutrients across vacuolar membranes of plant cells. Agriculture Group Symposium : advances in plant nutrition. Wiley.

Root-soil interactions.

B - Book chapters etc edited externally

Barraclough, P. B. and Tinker, P. B. 1988. Root-soil interactions. in: Handbook of environmental chemistry. Vol.2(D) Reactions and processes. Ed O. Hutzinger Berlin : Springer pp. 153-176

Effects of a compacted subsoil layer on root and shoot growth, water use and nutrient uptake of winter wheat.

A - Papers appearing in refereed journals

Barraclough, P. B. and Weir, A. H. 1988. Effects of a compacted subsoil layer on root and shoot growth, water use and nutrient uptake of winter wheat. The Journal of Agricultural Science. 110 (2), pp. 207-216. https://doi.org/10.1017/S0021859600081235

Comparison between the seminal and nodal root systems of winter wheat in their activity for N and K uptake.

A - Papers appearing in refereed journals

Kuhlmann, H. and Barraclough, P. B. 1987. Comparison between the seminal and nodal root systems of winter wheat in their activity for N and K uptake. Zeitschrift fur Pflanzenernahrung und Bodenkunde. 150 (1), pp. 24-30. https://doi.org/10.1002/jpln.19871500106

The growth and activity of winter wheat roots in the field: nutrient inflows of high-yielding crops.

A - Papers appearing in refereed journals

Barraclough, P. B. 1986. The growth and activity of winter wheat roots in the field: nutrient inflows of high-yielding crops. The Journal of Agricultural Science. 106 (1), pp. 53-59. https://doi.org/10.1017/S0021859600061724

The growth and activity of winter wheat roots in the field: nutrient uptakes of high-yielding crops.

A - Papers appearing in refereed journals

Barraclough, P. B. 1986. The growth and activity of winter wheat roots in the field: nutrient uptakes of high-yielding crops. The Journal of Agricultural Science. 106 (1), pp. 45-52. https://doi.org/10.1017/S0021859600061712

The effect of drought on the root growth of winter wheat and on its water uptake from a deep loam.

A - Papers appearing in refereed journals

Weir, A. H. and Barraclough, P. B. 1986. The effect of drought on the root growth of winter wheat and on its water uptake from a deep loam. Soil Use and Management. 2 (3), pp. 91-96. https://doi.org/10.1111/j.1475-2743.1986.tb00689.x

Nutrient fluxes in the rhizosphere of high-yielding grain crops.

G - Articles in popular magazines and other technical publications

Barraclough, P. B. 1986. Nutrient fluxes in the rhizosphere of high-yielding grain crops.

The growth and activity of winter wheat roots in the field: the effect of sowing date and soil type on root growth of high-yielding crops

A - Papers appearing in refereed journals

Barraclough, P. B. and Leigh, R. A. 1984. The growth and activity of winter wheat roots in the field: the effect of sowing date and soil type on root growth of high-yielding crops. The Journal of Agricultural Science. 103 (1), pp. 59-74. https://doi.org/10.1017/S002185960004332X

The growth and activity of winter wheat roots in the field: root growth of high-yielding crops in relation to shoot growth

A - Papers appearing in refereed journals

Barraclough, P. B. 1984. The growth and activity of winter wheat roots in the field: root growth of high-yielding crops in relation to shoot growth. The Journal of Agricultural Science. 103 (2), pp. 439-442. https://doi.org/10.1017/s0021859600047419

The determination of ionic diffusion coefficients in field soils. II. Diffusion of bromide ions in undisturbed soil cores.

A - Papers appearing in refereed journals

Barraclough, P. B. and Tinker, P. B. 1982. The determination of ionic diffusion coefficients in field soils. II. Diffusion of bromide ions in undisturbed soil cores. Journal of Soil Science. 33 (1), pp. 13-24. https://doi.org/10.1111/j.1365-2389.1982.tb01743.x

The determination of ionic diffusion coefficients in field soils. I. Diffusion coefficients in sieved soils in relation water content and bulk density.

A - Papers appearing in refereed journals

Barraclough, P. B. and Tinker, P. B. 1981. The determination of ionic diffusion coefficients in field soils. I. Diffusion coefficients in sieved soils in relation water content and bulk density. Journal of Soil Science. 32 (2), pp. 225-236. https://doi.org/10.1111/j.1365-2389.1981.tb01702.x