Items where Year is 1968
Number of items: 210.
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Experiments with ley and arable farming systems. (1968)
Boyd, D. A.
Experiments on the P and K requirements of barley. (1968)
Boyd, D. A., Webber, J., Hill, J
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The influence of penetration, distribution, sorption and decomposition on the poisoning of the cockroach Periplaneta americana treated topically with diazoxon. (1968)
Burt, Paul Ewin, Lord, K. A.
Protection of sugar beet stecklings against aphids and viruses by cover crops and aluminium foil. (1968)
Heathcote, G. D.
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The use of menazon seed dressing to decrease spread of virus yellows in sugar‐beet root crops. (1968)
Heathcote, G. D.
Serial factorial design. (1968)
Patterson, H. D.
B
Honey Bee Pathology. (1968)
Bailey, L.
The measurement and interrelationships of infections with Nosema apis and Malpighamoeba mellificae of honey-bee populations. (1968)
Bailey, L.
The multiplication of sacbrood virus in the adult honeybee. (1968)
Bailey, L.
The purification and properties of chronic bee-paralysis virus. (1968)
Bailey, L., Gibbs, A. J., Woods, R. D.
Experiments on the etiology of European foul brood of the honeybee. (1968)
Bailey, L., Locher, N.
Effects of insect predators on small populations of Aphis fabae in the field. (1968)
Banks, C. J.
Cannibalism and predation by aphids. (1968)
Banks, C. J., Macaulay, E. D. M., Holman, J.
Wheat bulb fly, Leptohylemyia coarctata Fall., and its effect on the growth and yield of wheat. (1968)
Bardner, R.
Movement and oviposition of wheat bulb flies. (1968)
Bardner, R., Lofty, J. R., Huston, P., Maskell, F. E.
Distribution of pyrophosphate-extractable iron and organic carbon in soils of various groups. (1968)
Bascomb, C. L.
A new apparatus for recording particle size distribution. (1968)
Bascomb, C. L.
The serological relationship between tobacco mosaic virus and cucumber viruses 3 and 4. (1968)
Bawden, Frederick, Kassanis, Basil
Nutrition experiments in forest nurseries. (1968)
Benzian, Blanche, Freeman, S. C. R.
High-altitude migration of aphids in maritime and continental climates. (1968)
Berry, R. E., Taylor, Roy
Oil plams on acid sulphate soils in Malaya. (1968)
Bloomfield, C., Coulter, J. K., Kanaris-Sotiriou, R.
The effect on yield of maincrop potatoes of different methods of fertilizer application. (1968)
Boyd, D. A., Hill, J. R., Batey, T.
Production of plant growth substances by Azotobacter chroococcum. (1968)
Brown, M. E., Burlingham, S. K.
Effects Produced on Tomato Plants, Lycopersicum esculentum, by Seed or Root Treatment with Gibberellic Acid and Indol-3yl-Acetic Acid. (1968)
Brown, M. E., Burlingham, S. K., Jackson, R. M.
Herbage /tillage systems in England. (1968)
Brown, N. J.
Expansion of Leaf Area Per Plant in Field Bean (Vicia fabia L.) as Related to Daily Maximum Temperature. (1968)
Bull, T. A.
Control of the greater and lesser wax moths (Galleria mellonella and Achroia grisella) with Bacillus thuringiensis. (1968)
Burges, H. D., Bailey, L.
Report of the Bee Department 1967. (1968)
Butler, Colin Gasking
Pheromones of the honeybee (Apis mellifera L.): the “inhibitory scent” of the queen. (1968)
Butler, Colin Gasking, Robert Kenneth Callow
Laboratory experiments on sugar‐beet downy mildew (Peronospora farinosa). (1968)
Byford, W. J.
Effect of the situation of the aphid host at death on the type of spore produced by Entomophthora spp. (1968)
Byford, W. J., Ward, L. K.
C
Identification and functions of secretion from the posterior scent gland of fifth instar larva of the bug Dysdercus intermedius. (1968)
Calam, D. H., Youdeowei, A.
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Fertiliser use on cereals in England and Wales, 1966. (1968)
Church, B. M.
A type of farming map based on agricultural census data. (1968)
Church, B. M., Boyd, D. A., Evans, J. A., Sadler, J. I.
The chemical composition of the cyst wall of the potato cyst-nematode, Heterodera rostochiensis. (1968)
Clarke, A. J.
Hatching agents for the potato cyst‐nematode, Heterodera rostochiensis Woll. (1968)
Clarke, A. J., Shepherd, A. M.
Future trends in the use of fertilisers. (1968)
Cooke, George William
How serious is soil compaction? (1968)
Cooke, George William
Rothamsted Chemistry Department 1967. (1968)
Cooke, George William
The Saxmundham Experiments. (1968)
Cooke, George William
Soil fertility problems in cereal growing. (1968)
Cooke, George William
Soils and fertilizers. (1968)
Cooke, George William
The forms and amounts of fertilizers used in the UK and possible changes that may affect methods of applications. (1968)
Cooke, George William
The Value of a Fluorescent Tracer in Determining the Quantity of Dieldrin on Honeybees Foraging in a Sprayed Crop. (1968)
Cooper, B. A., Needham, P. H., Stevenson, J. H.
The effect of the size of soil aggregates on nutrient supply. (1968)
Cornforth, I. S.
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Relationships between soil volume used by roots and nutrient accessibility. (1968)
Cornforth, J. S.
Calcium: Aluminium exchange equilibria in clay minerals and acid soils. (1968)
Coulter, B. S., Talibudeen, O.
The Thermophilic Actinomycetes in mouldy hay. (1968)
Cross, T., Maciver, A. M., Lacey, J.
Cation-anion relationships in crop nutrition: VI. The effect of part, age and species of plant and some soil characteristics. (1968)
Cunningham, R. K.
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Mites in bedroom air. (1968)
Cunnington, A. M., Gregory, P. H.
F
Dandelion as a competitor to fruit trees for bee visits. (1968)
Free, J. B.
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Engorging of honey by worker honeybees when their colony is smoked. (1968)
Free, J. B.
The Foraging Behaviour of Honeybees (Apis mellifera) and Bumblebees (Bombus Spp.) on Blackcurrant (Ribes nigrum), Raspberry (Rubus idaeus) and Strawberry (Fragaria × Ananassa) Flowers. (1968)
Free, J. B.
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Studies on the seasonal changes in the activities of honeybee colonies. (1968)
Free, J. B.
The behaviour of bees visiting runner beans (Phaseolus multiflorus). (1968)
Free, J. B.
The conditions under which foraging honeybees expose their Nasonov gland. (1968)
Free, J. B.
The pollination of black currants. (1968)
Free, J. B.
The pollination of strawberries by honey-bees. (1968)
Free, J. B.
The alerting pheromones of the honeybee. (1968)
Free, J. B., James Simpson
Effect of the time of day at which honeybee colonies are first allowed flight in a new location on their choice of flower species. (1968)
Free, J. B., Nuttall, P. M.
The pollination of oilseed rape (Brassica napus) and the behaviour of bees on the crop. (1968)
Free, J. B., Nuttall, P. M.
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The Pollination of Runner Beans (Phaseolus Multiflorus) in a Glasshouse. (1968)
Free, J. B., Racey, P. A.
The effect of the size of honeybee colonies on food consumption, brood rearing and the longevity of the bees during winter. (1968)
Free, J. B., Racey, P. A.
Migration records 1965. (1968)
French, R. A.
G
Geochemistry of the Whitbian (Upper Lias) sediments of the Yorkshire coast. (1968)
Gad, M. A., Catt, John, Le Riche, H. H.
Field experiments on carrots at Rothamsted, Woburn and Tunstall (Suffolk). (1968)
Garner, H. V.
Mineralizable-N in the soil under various leys and its effect on the yields of following wheat. (1968)
Gasser, J. K. R.
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The effects of soil management on available nitrogen. (1968)
Gasser, J. K. R.
The effects on winter wheat of ammonium sulphate, with and without a nitrification inhibitor, and of calcium nitrate. (1968)
Gasser, J. K. R., Hamlyn, F. G.
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Effects of previous cropping and fertilizer-N applied in field experiments on soil-N available to ryegrass grown in pots. (1968)
Gasser, J. K. R., Mitchell, J. D. D.
Broad‐bean stain and true broad‐bean mosaic viruses. (1968)
Gibbs, A. J., Giussani-Belli, G., Smith, H. G.
Broad‐bean stain and true broad‐bean mosaic viruses. (1968)
Gibbs, A. J., Giussani-Belli, G., Smith, H. G.
Physiological analysis of the effects of different soils on sugar beet crops in different years. (1968)
Goodman, P. J.
Adding a point to vector diagrams in multivariate analysis. (1968)
Gower, John
Algorithm AS 1: Simulating Multidimensional Arrays in One Dimension. (1968)
Gower, John
Movement of systemic insecticides through soil to plant roots. (1968)
Graham-Bryce, I. J.
Extraction, standardization and assessment of the volatility of the sex attractants of Heterodera rostochiensis Woll. and H. schachtii Schtn. (1968)
Greet, D. N., Green, C. D., Poulton, M. E.
H
Factors affecting flight responses of alienicolae of Aphis fabae Scop. and Schizaphis graminum Rondani (Homoptera: Aphididae). (1968)
Halgren, L. A., Taylor, Roy
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Reactions of some old and new British potato cultivars to tobacco rattle virus. (1968)
Harrison, B. D.
Manganese-phosphate reactions in aqueous systems and the effects of applications of monocalcium phosphate, on the availability of manganese to oats in an alkaline fen soil. (1968)
Heintze, S. G.
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Laboratory methods for assessing the toxicity of contact poisons to slugs. (1968)
Henderson, I. F.
Viruses in Horseradish. (1968)
Hickman, A. J., Varma, A.
The larger fungi of Rothamsted. (1968)
Holden, M.
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The effect of soil conditioners on the growth of sugar beet in a sandy soil. (1968)
Hoyt, P. B.
The effect of infection with beet yellows virus on the growth of sugar beet. (1968)
Hull, R.
The spray warning scheme for control of sugar beet yellows in England Summary of results between 1959-66. (1968)
Hull, R.
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CCC and cereals. (1968)
Humphries, E. C.
Effect of CCC on the growth of wheat roots. (1968)
Humphries, E. C.
The Effect of Growth Regulators, CCC and B9, on Protein and Total Nitrogen of Bean Leaves (Phaseolus vulgaris) during Development. (1968)
Humphries, E. C.
Responses of crop plants to growth regulators. (1968)
Humphries, E. C.
The benefical effects of CCC on wheat yields in dry conditions. (1968)
Humphries, E. C.
J
Leaching of fertilizers applied to a latosol in lysimeters. (1968)
J., Bolton,
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The effects of potassium and magnesium fertilizers on yield and composition of successive crops of ryegrass, clover, sugar beet, potatoes, kale and barley on sandy soil at Woburn. (1968)
J., Bolton,, Penny, A.
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A Review of the Genus Aulolaimus de Man, 1880 (Axonolaimidae: Aulolaiminae n. subfam.) with Notes on the Synonymy of the Genus Pandurinema Timm, 1957. (1968)
Jairajpuri, M. S., David, J. Hooper
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Invertase in the hypopharyngeal glands of the honeybee. (1968)
James Simpson, Riedel, I. B. M., Wilding, N.
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Chemical tests for potentially available nitrogen in soil. (1968)
Jenkinson, David
Studies on the decomposition of plant material in soil. III. The distribution of labelled and unlabelled carbon in soil incubated with 14C labelled ryegrass. (1968)
Jenkinson, David
A titrimetric method for determining total sulphur in mineral soils. (1968)
Jenkinson, David
Entomological Department at Rothamsted 1967. (1968)
Johnson, C. G.
Obituary - Professor Frank Raw. (1968)
Johnson, C. G.
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Insect pests on Broadbalk. (1968)
Johnson, C. G., Lofty, J. R., Cross, D. J.
Broadbalk: Historical Introduction. (1968)
Johnston, Johnny, Garner, H. V.
Observations on hymenopterous parasites of frit fly Oscinella frit L. on oats. (1968)
Jones, M. G.
The effect of moving carabids on oviposition by frit fly (Oscinella Frit. L.). (1968)
Jones, M. G.
Potato production using resistant varieties on land infested with potato cyst-eelworm, Heterodera rostochiensis Woll. (1968)
Jones, F. G. W., Parrott, D. M.
A method of assessing losses in spring oats from frit fly (Oscinella frit(L)) shoot attack. (1968)
Judenko, E.
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K
The Transmission of Satellite Viruses of Tobacco Necrosis Virus by Olpidium brassicae. (1968)
Kassanis, Basil, MacFarlane, I.
Aggregated forms of the satellite of tobacco necrosis virus. (1968)
Kassanis, Basil, Woods, R. D.
The effects of drying and ageing tree leaves on the ability of their aqueous extracts to dissolve ferric oxide. (1968)
King, H. G. C., Bloomfield, C.
The purification of commercial Alizarin Red S for the determination of aluminium in silicate minerals. (1968)
King, H. G. C., Pruden, G.
The identification and classification of Rhizobium. (1968)
Kleczkowska, J., Nutman, P. S., Skinner, F. A., Vincent, J. M.
Dark reactivation of ultraviolet-irradiated tobacco necrosis virus. (1968)
Kleczkowski, A.
Mathematical models for infectivity dilution curves of plant viruses. (1968)
Kleczkowski, A.
The multiplicity of bands in the gel diffusion precipitin analysis of the protein of tobacco mosaic virus. (1968)
Kleczkowski, A.
The identification and classification of Rhizobium. (1968)
Kleczkowski, J., Nutman, P. S., Skinner, F. A.
L
The Microflora of Fodders Associated with Bovine Respiratory Disease. (1968)
Lacey, J.
Infection of potato tubers by common scab (Streptomyces scabies) during brief periods when soil is drying. (1968)
Lapwood, D. H.
Observations on the infection of potato leaves by Phytophthora infestans. (1968)
Lapwood, D. H.
Nitrate nitrogen in leaves and petioles of sugar beet in relation to yield of sugar and juice purity. (1968)
Last, F. T., Tinker, P. B.
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Ion-exchange concentration of trace elements for spectrochemical analysis of rocks and soils. (1968)
Le Riche, H. H.
Metal contamination of soil in the Woburn Market-Garden experiment resulting from the application of sewage sludge. (1968)
Le Riche, H. H.
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The location of trace elements in sedimentary rocks and in soils derived from them. (1968)
Le Riche, H. H.
The substrate specificity of aminoacyl-tRNA synthetases from higher plants. (1968)
Lea, P. J., Fowden, Leslie
Photosynthesis in crop profiles, measured by phytometers. (1968)
Leach, G. J., Watson, D. J.
Windbreaks, shelter and insect distribution. (1968)
Lewis, T.
A program to fit constants to multiway tables of quantitative and quantal data. (1968)
Lewis, T.
Instruments and techniques for measuring the microclimate of crops. (1968)
Long, I. F.
Studies on the penetration and sorption of insecticides in insects. (1968)
Lord, K. A.
Insecticides on single seeds treated with liquid dressings. (1968)
Lord, K. A., Jeffs, K. A., Tuppen, R. J.
The secretion of the systemic insecticides dimethoate and phorate into nectar. (1968)
Lord, K. A., May, M. A., Stevenson, J. H.
M
A soil‐borne virus of winter oats. (1968)
Macfarlane, I., Jenkins, J. E. E., Melville, S. C.
Evaluation of phosphate fertilizers II Residual value of nitrophosphates, Gafsa rock phosphate, basic slag and potassium metaphosphate for potatoes, barley and swedes grown in rotation, with special reference to changes in soil phosphorus status. (1968)
Mattingly, G. E. G.
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Evaluation of phosphate fertilizers I. Immediate value of dicalcium phosphate, nitrophosphates, Gafsa rock phosphate, basic slag and potassium metaphosphate for barley and ryegrass. (1968)
Mattingly, G. E. G., Penny, A.
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Electron microscopic observation on dolichos enation mosaic virus. (1968)
McCarthy, D., Woods, R. D.
Crop rotations for experimental stations. (1968)
McEwen, J.
Problems in the systematics of the Olpidiaceae. (1968)
Mcfarlane, I.
Transmission of tobacco necrosis virus to higher plants by Olpidium—a model for the activities of lower fungi parasitic in algae. (1968)
Mcfarlane, I.
Patterns and progress of research. (1968)
Monteith, John Lennox
The distribution of Endogone spores in some Australian and New Zealand soils, and in an experimental field soil at Rothamsted. (1968)
Mosse, B., Bowden, G. D.
A key to the recognition of some Endogone spore types. (1968)
Mosse, B., Bowden, G. D.
Separation of Endogone spores from organic soil debris by differential sedimentation on gelatin columns. (1968)
Mosse, B., Jones, G. W.
P
Apparatus for the simultaneous measurement of water vapour and carbon dioxide exchanges of single leaves. (1968)
Parkinson, K. J.
Bio-electric Potentials of Intact Green Plants III Effects of jacketing a region of the plant tissue between the measuring contacts with mineral salt solutions. (1968)
Parkinson, K. J.
Carbon dioxide infra-red gas analysis - effects of water vapour. (1968)
Parkinson, K. J.
Calibration of infra-red gas analysers for use with carbon dioxide. (1968)
Parkinson, K. J., Legg, B. J.
Available and accessible water. (1968)
Penman, Howard Latimer
The Earth's potential. (1968)
Penman, Howard Latimer
The inefficiency of world farming. (1968)
Penman, Howard Latimer
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Cytochrome Oxidase and Mitochondrial Protein in Extracts of Leaves of Nicotiana glutinosa L. Infected with Tobacco Mosaic Virus. (1968)
Pierpoint, William Stanley
Exchange visits of scientists between the Academy of the Socialist Republic of Rumania and the Royal Society [Report O/6 (68)]. (1968)
Pirie, Norman Wingate (Bill)
Implementing the possibilities. (1968)
Pirie, Norman Wingate (Bill)
Use of plant protein concentrates as human food. (1968)
Pirie, Norman Wingate (Bill)
Balanced 6× 6 designs for 9 treatments. (1968)
Preece, D. A.
R
The Food of Female Wheat Bulb Flies (Leptohylemyia coarctata (Fall.)). (1968)
Raw, F., Jones, M. G., Gregory, P. H.
Studies on the chemical control of wireworms (Agriotes spp.) III.—The direct and residual effects of BHC, aldrin and dieldrin. (1968)
Raw, F., Lofty, J. R., Potter, C.
Morphology of particles in size-fractionated Na-montmorillonites. (1968)
Robertson, H. E., Weir, A. H., Woods, R. D.
The occurrence of perithecia of the oak mildew in Britain. (1968)
Robertson, N., Macfarlane, I.
Discussion of hamilton,ra. (1968)
Rodgers, C. D., Shaw, E. M., Monteith, John Lennox, Penman, Howard Latimer
Water movement in dry soils I Physical factors affecting sorption of water by dry soil. (1968)
Rose, D. A.
Water movement in porous materials III Evaporation of water from soil. (1968)
Rose, D. A.
Statistical Models and Designs for Varietal, Fertiliser and Pesticide Trials. (1968)
Ross, G. J. S.
S
The automatic determination of phosphorus in extracts of soils made with 0.5 M sodium bicarbonate and 0.01 M calcium chloride. (1968)
Salt, P. D.
Examination of the isolated autosomes of the SKA strain of house-flies (Musca domestica L.) for resistance to several insecticides with and without pretreatment with sesamex and TBTP. (1968)
Sawicki, R. M., Farnham, A. W.
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The use of visible mutant markers in the study of resistance of house flies to insecticides. (1968)
Sawicki, R. M., Farnham, A. W.
Genetics of resistance to insecticides of the ska strain of musca domestica Iii. Location and isolation of the factors of resistance to dieldrin. (1968)
Sawicki, R. M., Farnham, Michelle
Growth substances in roots of tomato (Lycopersicon esculentum Mill.) infected with root‐knot nematodes (Meloidogyne spp.). (1968)
Setty, K. G. H., Wheeler, A. W.
The anaerobic bacteria of soil. (1968)
Skinner, F. A.
The limits of microbial existence. (1968)
Skinner, F. A.
The benefits and limitations of breakcrops for the control of soil-borne diseases of cereals. (1968)
Slope, D. B.
Isolation of ammonia‐oxidizing autotrophic bacteria. (1968)
Soriano, S., Walker, N.
A review of the biology and ecology of slugs of agricultural importance. (1968)
Stephenson, J. W.
Laboratory studies on the acute contact and oral toxicities of insecticides to honeybees. (1968)
Stevenson, J. H.
Measurement of radiant energy. (1968)
Szeicz, G.
T
Potassium reserves in British soils: II. Soils from different parent materials. (1968)
Talibudeen, O., Dey, S. K.
Potassium reserves in British soils. I. The Rothamsted Classical Experiments. (1968)
Talibudeen, O., Dey, S. K.
Leaf injury and food consumption by larvae of Phaedon cochleariae (Coleoptera; Chrysomelidae) and Plutella maculipennis (Lepidoptera plutellidae) feeding on turnip and radish. (1968)
Taylor, W. E., Bardner, R.
Growth, development, and yield of spring wheat in artificial climates. (1968)
Thorne, G. N., Ford, M. A., Watson, D. J.
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Growth of perennial grass weeds in relation to the cereal crop. (1968)
Thurston, J. M., Williams, E. D.
V
Rate‐controlling processes in the release of soil phosphate. (1968)
Vaidyanathan, L. V., Talibudeen, O.
Some observations on the structure of the filamentous particles of several plant viruses. (1968)
Varma, A., Gibbs, A. J., Woods, R. D., Finch, J. T.
W
A prospect of crop physiology. (1968)
Watson, D. J.
Population studies on the active stages of the black bean aphid, Aphis fabae Scop., on its winter host Euonymus europaeus L. (1968)
Way, M. J., Banks, C. J.
Serological and morphological studies on the inter- and intraspecific differences of the plant-parasitic nematodes Heterodera and Ditylenchus. (1968)
Webster, J. M., David, J. Hooper
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Equipment for sampling roots of field crops. (1968)
Welbank, P. J.
Root growth of a barley crop estimated by sampling with portable powered soil-coring equipment. (1968)
Welbank, P. J., Williams, E. D.
Root growth of a barley crop estimated by sampling with portable powered soil-coring equipment. (1968)
Welbank, P. J., Williams, E. D.
Effect of radiation and temperature on efficiency of cereal leaves during grain growth. (1968)
Welbank, P. J., Witts, K. J., Thorne, G. N.
Changes in Auxins in Expanding and Senescent Primary Leaves of Dwarf French Bean (Phaseolus vulgaris). (1968)
Wheeler, A. W.
Conversion of tryptophan to auxin by phenolic esters from leaves of dwarf French bean (Phaseolus vulgaris L.). (1968)
Wheeler, A. W., King, H. G. C.
Taxonomy of Meloidogyne (Nematodea: Heteroderidae) with descriptions of four new species. (1968)
Whitehead, A. G.
Why starve grass ? (1968)
Widdowson, F. V.
Results of an experiment at Rothamsted testing farmyard manure and N, P and K fertilizers on five arable crops and permanent grass III. Yields 1961–1965. (1968)
Widdowson, F. V., Penny, A.
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Preliminary studies of germination and seedling behaviour in Agropyron repens (L.) Beauv. and Agrostis gigantea Roth. (1968)
Williams, E. D.
The effect of traces of beryllium on the growth of kale, grass, and mustard. (1968)
Williams, Rodney, Le Riche, H. H.
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Adsorption and desorption of simazine by some Rothamsted soils. (1968)
Williams, J. D. H.
