Items where Year is 1949

Number of items: 102.
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  • The residual manurial value of feeding stuffs consumed on grass. (1949) Boyd, D. A., Crowther, Edward Mortimer, Moffatt, J. R., Yates, Frank
  • Studies on soil organic matter: Part I. The chemical nature of soil organic nitrogen. (1949) Bremner, J. M.
  • Studies on soil organic matter: Part III. The extraction of organic carbon and nitrogen from soil. (1949) Bremner, J. M.
  • Use of the Van Slyke-Neil manometric apparatus for the determination of organic and inorganic carbon in soil and of organic carbon in soil extracts. (1949) Bremner, J. M.
  • Studies on soil organic matter: Part II. The extraction of organic matter from soil by neutral reagents. (1949) Bremner, J. M., Lees, H.
  • Factors affecting the activity of alatae of the aphids Myzus persicae (Sulzer) and Brevicoryne brassicae (L.). (1949) Broadbent, L.
  • The grouping and overwintering of Myzus persicae Sulz. on prunus species. (1949) Broadbent, L.
  • Overwintering of aphids, especially Myzus persicae (Sulzer), in root clamps. (1949) Broadbent, L., Cornford, C. E., Hull, R., Tinsley, T. W.
  • Alate aphids trapped in the British Isles, 1942–1947. (1949) Broadbent, L., Doncaster, J. P.
  • The interpretation of X-ray diagrams of soil clays. II. Structures with random interstratification. (1949) Brown, G., MacEwan, D. M. C.
  • Studies on Sclerotinia and Botrytis: II. De Bary's description and specimens of Peziza fuckeliana. (1949) Gregory, P. H.
  • The operation of the puff-ball mechanism of lycoperdon perlatum by raindrops shown by ultra-high-speed schlieren cinematography. (1949) Gregory, P. H.
  • Death of sycamore trees associated with an unidentified fungus. (1949) Gregory, P. H., Peace, T. R., Waller, S.
  • The spatial distribution of insect‐borne plant‐virus diseases. (1949) Gregory, P. H., Read, D. R.
  • Conferencias pronunciadas por el Dr Douglas M.C. MacEwan sobre la estructura cristalina de los minérales arcillos. (1949) MacEwan, D. M. C.
  • Mineralogical analysis of clays by X-rays. (1949) MacEwan, D. M. C.
  • Some notes on the recording and interpretation of X-ray diagrams of soil clays. (1949) MacEwan, D. M. C.
  • L'adsorption interlamellaire. (1949) MacEwan, D. M. C., Talibudeen, O.
  • The competition between barley and certain weeds under controlled conditions III Competition with Agrostis Gigantea. (1949) Mann, H. H., Barnes, T. W.
  • Rothamsted field experiments. (1949) Plot Committee, Crowther, Edward Mortimer, Garner, H. V., Moffatt, J. R., Yates, Frank, Mann, H. H., Watson, D. J.
    • A
  • The Statistical Analysis of Insect Counts Based on the Negative Binomial Distribution. (1949) Anscombe, Frank (Francis John)
    • B
  • Experiments with leys and permanent grass. (1949) Boyd, D. A.
  • Bee behaviour. (1949) Butler, Colin Gasking
  • Report of the Bee Department 1948. (1949) Butler, Colin Gasking
    • C
  • The movement of tobacco mosaic viruses and potato virus x through tomato plants. (1949) Capoor, S. P.
  • The foraging method of individual honey-bees. (1949) Charles "Ronald" Ribbands
  • Apparatus for fertilizer placement field work. (1949) Cooke, George William
  • Fertiliser placement. (1949) Cooke, George William
  • Fertilizer placement experiments. (1949) Cooke, George William
  • Placement of fertilizer for potatoes. (1949) Cooke, George William
  • Placement of fertilizers for row crops. (1949) Cooke, George William
  • Recent developments in fertiliser placement. (1949) Cooke, George William
  • Committee on nutrition problems in forest nurseries: summary report on 1948 experiments. (1949) Crowther, Edward Mortimer
  • Soil-fertility problems in tropical agriculture III Fertility problems. (1949) Crowther, Edward Mortimer
  • Soils and fertilizers. (1949) Crowther, Edward Mortimer
  • The effects of plants and animals on soil fertility A review of Rothamsted work. (1949) Crowther, Edward Mortimer
  • Condition in fertilisers - Paper read before a meeting of the Fertiliser Society in London on 20th January 1949. (1949) Crowther, Edward Mortimer, Davies, G. R., Ditcham, J. R., Ettle, G. W., Greaves, W. S., Sherwin, K. A.
    • D
  • The movement and precipitation of iron oxides in podzol soils. (1949) Deb, B. C.
  • The design of experiments in egg production of poultry. (1949) Dudley, F. J., Read, D. R.
    • E
  • Differentiation of the Vegetative and Sporogenous Phases of the Actinomycetes 4. The Partially Acid-fast Proactinomycetes. (1949) Erikson, D.
  • The morphology, cytology, and taxonomy of the actinomycetes. (1949) Erikson, D.
    • F
  • Investigations on the Emergence of Larvae from Cysts of the Potato-root Eelworm Heterodera rostochiensis. I. Technique and Variability. (1949) Fenwick, D. W. picture_as_pdf
  • A Quick Method of Demonstrating Nematodes of the Genus Aphelenchoides in Leaves. (1949) Franklin, M. T. picture_as_pdf
  • A cotton blue-lactophenol technique for mounting plant-parasitic nematodes. (1949) Franklin, M. T., Goodey, J. B. picture_as_pdf
    • G
  • Fertilizers in present-day agriculture. (1949) Gammie Ogg, Sir
  • Improving soil productivity : temperate climates UN Conference on the Conservation and Utilization of Resources. Introductory paper prepared for Section Meetings : Land Resources 5a. (1949) Gammie Ogg, Sir
  • Rothamsted experiments on the use of salt for sugar beet. (1949) Gammie Ogg, Sir
  • The part played by phosphorus in agriculture. (1949) Gammie Ogg, Sir
  • A study of violet root rot II Effect of substratum on survival of Helicobasidium purpureum colonies in the soil. (1949) Garrett, S. D.
  • Effect of previous crops on the incidence of eyespot on winter wheat. (1949) Glynne, Mary Dilys, Moore, F. J.
  • The Control of Anguillulina dipsaci on the seed of Teazle and Red Clover by Fumigation with Methyl Bromide. (1949) Goodey, John Basil picture_as_pdf
  • Tuber-rot eelworm of potato and its weed hosts. (1949) Goodey, Tom (Thomas), Goodey, John Basil picture_as_pdf
    • H
  • Routine Computation of Biological Assays Involving a Quantitative Response. (1949) Healy, Michael John Romer
  • Liming experiments on light land at Tunstall: II. Soil reaction and loss of lime. (1949) Heintze, S. G.
  • Studies on soil manganese. (1949) Heintze, S. G., Mann, P. J. G. picture_as_pdf
    • J
  • Development of research on the insect aerofauna. (1949) Johnson, C. G.
  • Seasonal records in 1947 and 1948 of flying hemiptera-heteroptera, particularly lygus pratensis l., caught in nets 50 ft. To 3,000 ft. above the ground. (1949) Johnson, C. G., Southwood, T. R. E.
    • K
  • Potato tubers freed from leaf-roll virus by heat. (1949) Kassanis, Basil
  • A necrotic disease of forced tulips caused by tobacco necrosis viruses. (1949) Kassanis, Basil
  • The transmission of sugar‐beet yellows virus by mechanical inoculation. (1949) Kassanis, Basil
  • The oxidation of manganese by plant extracts in the presence of hydrogen peroxide. (1949) Kenten, R. H., Mann, P. J. G.
  • A quantitative study of complex formation in heated protein mixtures. (1949) Kleczkowski, A. picture_as_pdf
  • The transformation of local lesion counts for statistical analysis. (1949) Kleczkowski, A.
    • L
  • The effect of insecticides of the respiration of Oryzaephilus surinamensis - an attempt to compare the speeds of action of a number of DDT analogues. (1949) Lord, K. A.
    • M
  • Influence of Kinetin, β-lndoleacetic Acid and Gibberellic Acid on Nuclease Activity of Bean (Phaseolis vulgaris) Hypocotyls. (1949) Maciejewska-Potapczyk, W.
  • Relation between particles size and shape of insecticial suspensions and their contact toxicity I DDT suspensions against Tribolium Castaneum Hb. (1949) Mcintosh, A. H.
  • Relation between particles size and shape of insecticial suspensions and their contact toxicity II DDT and rotenone suspensions against Oryzaephilus surinamesis L. with some time-motality studies. (1949) Mcintosh, A. H.
  • Isolation of Nitrosomonas from Rothamsted soil. (1949) Meiklejohn, J.
    • N
  • Studies of the clove tree I Sudden‐death disease and its epidemiology. (1949) Nutman, F. J., Sheffield, Frances
  • Nuclear and cytoplasmic inheritance of resistance to infection by nodule bacteria in red clover. (1949) Nutman, P. S. picture_as_pdf
  • Physiological Studies on Nodule Formation: II. The Influence of Delayed Inoculation on the Rate of Nodulation in Red clover. (1949) Nutman, P. S. picture_as_pdf
    • O
  • Liming Experiments on Light Land at Tunstall, Suffolk Pt 1 The agricultural aspects. (1949) Oldershaw, A. W., Garner, H. V.
    • P
  • Meteorology in agriculture. (1949) Penman, Howard Latimer
  • The dependence of transpiration on weather and soil conditions. (1949) Penman, Howard Latimer
  • A general survey of meteorology in agriculture and an account of the physics of irrigation control - discussion. (1949) Penman, Howard Latimer
  • A portable thermistor bridge for micro-meteorology among growing crops. (1949) Penman, Howard Latimer, Long, I. F.
  • Potato Root Eelworm. (1949) Peters, B. G.
  • Potato Root Eelworm Problem. (1949) Peters, B. G.
  • Field trials with d‐d mixture against potato‐root eelworm. (1949) Peters, B. G., Fenwick, D. W.
  • Potato Root Eelworm, DD, and Soil Sterilization, III. Results for 1947. (1949) Peters, B. G. picture_as_pdf
  • Studies on the Toxicity Of insecticide Films I Preliminary Investigations on concentration-time-mortality relation. (1949) Pradhan, S.
  • Studies on the Toxicity of insecticide Films II Effect of Temperature on the Toxicity of DDT Films. (1949) Pradhan, S.
  • Studies on the Toxicity of insecticide Films III Effect of relative Humidity on the Toxicity of Films. (1949) Pradhan, S.
    • R
  • A Study of the Accuracy of Simple Methods for the Estimation of Egg Production and Mean Egg Weight. (1949) Read, D. R. picture_as_pdf
  • The relation between soil cultivation and crop yields. (1949) Russell, Edward Walter
  • The way out. (1949) Russell, Sir Edward
    • S
  • Calculation of surface area of clays from measurements of negative adsorption. (1949) Schofield, R. K.
  • Effect of pH on electric charges carried by clay particles. (1949) Schofield, R. K.
  • The effect of artificial fertilizers and dung on the numbers of amoebae in Rothamsted soils. (1949) Singh, B. N. picture_as_pdf
  • The Relationship between Micro-organisms and Soil Aggregation. (1949) Swaby, R. J.
  • The influence of earthworms on soil aggregation. (1949) Swaby, R. J.
  • The influence of humus on soil aggregation. (1949) Swaby, R. J.
    • W
  • Yellowing disease of 'family 41' sugar beet. (1949) Watson, Marion, Hull, R., Hartsuijker, K.
  • Laboratory experiments on the effect of DDT and BHC on certain aphidophagous insects and their hosts. (1949) Way, M. J.
  • A technique for determining the stomach poison effect of insecticides used against leaf‐eating insects. (1949) Way, M. J.
  • Photoperiodism and Diapause in Insects. (1949) Way, M. J., Hopkins, B., Smith, P. M.
  • Obituary Augustus Daniel Imms, 1880 - 1949. (1949) Wigglesworth, V. B. picture_as_pdf
  • Jaccard's generic coefficient and coefficient of floral community, in relation to the logarithmic series and the index of diversity. (1949) Williams, Carrington Bonsor
  • Migration in lepidoptera and the problem of orientation. (1949) Williams, Carrington Bonsor
    • Y
  • The design of rotation experiments. (1949) Yates, Frank
  • The place of experimental investigations in the planning of resource utilization. (1949) Yates, Frank
  • The relative yields of different crops in terms of food and their responses to fertilizers. (1949) Yates, Frank, Boyd, D. A.