1. Some aspects of the wheat bulb fly problem The fifth Barnes Memorial Lecture
  2. The nature and causes of annual fluctuations in numbers of Aphis fabae Scop. on field beans (Vicia faba)
  3. Physiological characteristics of the growth of sugar-beet crops on different soils
  4. Disease problems of intensive cereal growing
  5. Genetics of resistance to insecticides of the SKA strain of Musca domestica I Location of the main factors responsible for the maintence ofhigh DDT-resistance in diazinon-selected SKA flies
  6. Sugar beet seed production
  7. Meloidogyne ardenensis n. sp. (Nematoda: Heteroderidae) a new British species of root-knot nematode
  8. The distribution of slugs in a potato crop
  9. The moisture regimes of soils developed on Keuper Marl
  10. The effects of magnesium sulphate on sugar-beet yield and its interactions with other fertilizers
  11. The effect of environment on sex determination in Heterodera rostochiensis
  12. The reactions of Dysdercus intermedium (Heteroptera, Pyrrhocoridae) to moisture with special reference to aggregation
  13. Observations on some effects of population density on Dysdercus intermedius Distant (Heteroptera, Pyrrhocoridae)
  14. 235 Note Cyclic Generation of Robinson's Balanced Incomplete Block Designs
  15. Nested balanced incomplete block designs
  16. Incomplete block designs with v= 2k
  17. An all-plastic suction funnel
  18. Spectrophotometric determination of aluminium in soil extracts with xylenol orange
  19. Automatic measurement of frost-heave results from Malham and Rodley (Yorkshire)
  20. Infectivity Changes in Preparations from Plants Infected with Tobacco Mosaic Virus
  21. In vitro crystallization of tobacco mosaic virus in the presence of basic proteins
  22. Results of an experiment at Woburn testing farmyard manure and N, P and K fertilizers on five arable crops and a long ley: I. Yields
  23. Experiments comparing the effects on yields of potatoes of three methods of applying three amounts of NPK fertilizer and the residual effects on following winter wheat
  24. Experiments measuring effects of ammonium and nitrate fertilizers, with and without sodium and potassium, on spring barley
  25. Results of an experiment at Woburn testing farmyard manure and N, P and K fertilizers on five arable crops and on a long ley: II. N, P and K removed by the crops
  26. Water Deficit and the Growth of Crop Seedlings I The effect of rate of change of soil water content on kale seedlings
  27. A radiation-cooled growth cabinet
  28. Bee poisoning in 1968
  29. Bee poisoning in 1967
  30. Changes in phlogopites during their artificial alteration
  31. The effect of different nitrogenous fertilizers applied as solids or soluctions dry matter yields and niotrogen uptake by grass. Part II
  32. Factors affecting the toxicity of diazinon to Musca domestica L.
  33. The horizontal and vertical distribution of flying insects near artificial windbreaks
  34. Observations on the Timing of Irrigation and the Incidence of Potato Common Scab (Streptomyces scabies)
  35. Laboratory assessments of the susceptibility of potato tubers to infection by blight (Phytophthora infestans)
  36. Small Doses of D‐D Soil Fumigant to Control Free‐living Nematodes Injurious to Sugar Beet
  37. A fresh look at the basic principles of the design and analysis of experiments
  38. Water use in agriculture
  39. Climate and crops
  40. The production of virus‐free clones of some British potato varieties
  41. The quality of virus as affected by the ambient temperature
  42. Algorithm AS 28: Transposing Multiway Structures
  43. The effects of changes in soil compaction and porosity on germination, establishment and yield of barley and globe beet
  44. The component of commercial Titan yellow most reactive towards magnesium: its isolation and use in determining magnesium in silicate minerals
  45. Frequency of new females (cysts) in single-cyst cultures of Heterodera rostochiensis; their relevance to the inheritance of ability to overcome resistance and to the frequency of mating
  46. The Yield of Potatoes Resistant To Heterodera Rostochiensis On Infested Land
  47. The population genetics of the potato cyst‐nematode, Heterodera rostochiensis: mathematical models to simulate the effects of growing eelworm ‐resistant potatoes bred from Solatium tuberosum ssp. andigena
  48. The progress of research at Rothamsted on aerial migrations of insects
  49. International dispersal of insects and insect-borne viruses
  50. The chemical analysis of small samples of leaf material and the relationship between the disappearance and composition of leaves
  51. The Overwintering of Aphids and Viruses on Sugar Beet Seed Crops in England, 1963‐1966
  52. Observations on two races of the groundnut aphid Aphis craccivora
  53. The synthesis of the active component of commercial Titan yellow for use in the determination of magnesium
  54. The transmission of strawberry latent ringspot virus by Xiphinema diversicaudatutn (Nematoda)
  55. The transmission of European wheat striate mosaic virus by Javesella pellucida (Fabr.) injected with extracts of plants and plant‐hoppers
  56. Some properties of cocksfoot mottle virus
  57. Atmospheric microbial cloud systems
  58. Persistence and effectiveness of carbophenothion, chlorfenvinphos and ethion seed dressings to control wheat bulb fly (Leptohylemyia coarctata)
  59. Persistence and distribution of insecticidal seed‐dressings for control of the wheat bulb fly, Leptohylemyia coarctata
  60. The effects of insecticides on the biting behaviour of wireworms (Agriotes spp)
  61. The effects on soil fauna of insecticides tested against wireworms (Agriotes spp.) in wheat
  62. The effect of soil fumigation on the growth of sugar beet
  63. Preparation of nematodes for examination under the Stereoscan electron microscope
  64. The effect of ultra-violet radiation on the invasion, survival and fertility of larvae of Heterodera rostochiensis
  65. The attraction of male cyst-nematodes by their females
  66. Nematodes
  67. The dependence of photosynthesis on carbohydrate sinks: current concepts
  68. Some general properties of growth regulators and their potential use in agriculture
  69. Interaction of CCC and water deficit on wheat yield
  70. Experiments on the time of application of insecticide to decrease the spread of yellowing viruses of sugar beet, 1954‐66
  71. The effect of subsoiling and different levels of manuring on yields of cereals, lucerne and sugar beet
  72. Some observations on Anomyctus xenurus Allen, 1940
  73. Chlorophyll-type compounds in soil III Their significance in arable soils
  74. The inactivation of pea-seedling diamine oxidase by peroxidase and 1, 5-diaminopentane
  75. Long-distance spore transport
  76. Long-distance Spore Transport: Vertical Sections of Spore Clouds over the Sea
  77. Long-distance Spore Transport: Methods of Measurement, Vertical Spore Profiles and the Detection of Immigrant Spores
  78. The importance of tuber diseases
  79. An effect of soil compaction on the incidence of potato coiled sprout
  80. The prevalence of pathogenic fungi on seed tubers
  81. An effect of soil compaction on the incidence of potato coiled sprout
  82. Preliminary studies on sap‐transmissible viruses of red clover (Trifolium pratense L.) in England and Wales
  83. The value of urea nitrate and urea phosphate as nitrogen fertilizers for grass and barley
  84. The effect of a nitrification inhibitor on the concentration of nitrate in plants
  85. Effects of ammonium sulphate and calcium nitrate on the growth, yield and nitrogen uptake of barley, wheat and oats
  86. Measurement of losses from fertilizer nitrogen during incubation in acid sandy soils and during subsequent growth of ryegrass, using 15N‐labelled fertilizers
  87. Factors affecting earthworms in pastures
  88. The altitudinal zoning of grassland and soils on the Brecon Beacons in South Wales
  89. A rasp-drum laboratory thresher and cleaner
  90. Results of fertiliser experiments on carrots in 1941 and 1942
  91. The production of drone comb by honeybee colonies
  92. Factors determining the collection of pollen by honeybee foragers.
  93. Seasonal regulations in the honeybee colony
  94. Recent discoveries about honeybee behaviour that have possible application to bee keeping
  95. The effect on honeybee mortality of applying insecticides as sprays or granules to flowering field beans
  96. Measurement of soil moisture in the field by neutron moderation
  97. Obituary Bernard George Peters
  98. Aphelenchoides goodeyi n. sp.(Nematoda: Aphelenchoidea), a mycophagous nematode from South India
  99. Effect of late season N and K top dressings applied to conifer seedlings and transplants on nutrient concentrations in the whole plant and on growth after transplanting
  100. Comparative effects of temperature on the multiplication in tobacco leaves of two tobacco rattle viruses
  101. Apparent symbiotic interaction between particles of tobacco rattle virus
  102. Effect of CO2 Concentration on Growth of Sugar-beet, Barley, Kale, and Maize
  103. Some gross changes in particles of tobacco mosaic virus caused by large doses of ultraviolet radiation.
  104. Inactivation of infectivity of RNA of tobacco mosaic virus during ultraviolet-irradiation of the whole virus at two wavelengths
  105. Inactivation of infectivity of RNA of tobacco mosaic virus during ultraviolet-irradiation of the whole virus at two wavelengths
  106. Genetics of resistance to insecticides of the SKA strain of Musca domestica II. Isolation of the dominant factors of resistance to diazinon
  107. New synthetic insecticidal compounds related to pyrethrins
  108. Effect of wax and lanolin emulsions on the efficiency of potato‐blight fungicides in laboratory tests
  109. 2,4-Dimethylphenylacetic acid from cyanodihydrocarvone
  110. Effect of soil fumigants on Fusarium wilt and nodulation of peas ( Pisum sativum L. )
  111. Observations on periodicity of hatching of eggs of the potato cyst nematode, Heterodera rostochiensis Woll.
  112. The relationship between the size of yellow water traps and catches of aphids
  113. Flavianic acid as a hatching agent for Heterodera cruciferae Franklin and other cyst nematodes
  114. The chemical composition of the egg shells of the potato cyst-nematode, Heterodera rostochiensis Woll
  115. The development and life history of the false root-knot nematode, Nacobbus serendipiticus.
  116. The availability of plant nutrients in soils and their uptake by crops
  117. Advice on using fertilizers 1861-1967
  118. Value and valuation of fertilizer residues
  119. The soil survey
  120. Stone orientation and other structural features of tills in east Yorkshire
  121. The origin and development of Clay‐with‐flints and associated soil horizons on the South Downs
  122. The altitudinal zoning of grassland and soils on the Brecon Beacons in South Wales
  123. The behaviour of second-stage Heterodera rostochiensis larvae leading to their emergence from the egg.
  124. Effects of growth regulators, CCC and B9, on some potato varieties
  125. Effect of a growth inhibitor, N-dimethylaminosuccinamic acid (B9), on potato plants in the field
  126. Thermodynamics of K–Ca ion exchange in soils
  127. Rubidium 86 as a tracer for exchangeable potassium in soils
  128. Ion exchange in soils from the ion pairs K–Ca, K–Rb, and K–Na
  129. Variation in the long-tailed field-mouse (Apodemus sylvaticus (L.)) in the Channel Islands
  130. Variation in the Long‐tailed field‐mouse (Apodemus sylvaticus) in South‐West England
  131. Some observations on the economic importance of sugar‐beet downy mildew in England
  132. Host specialization of Peronospora farinosa on Beta, Spinacia and Chenopodium
  133. Field experiments on sugar‐beet downy mildew (Peronospora farinosa)
  134. The effect of some cultivation factors on the incidence of downy mildew in sugar‐beet root crops
  135. The in vitro hydrolysis of leaf proteins II The action of papain on protein concentrates extracted from leaves of different species
  136. The in vitro hydrolysis of leaf proteins I The action of papain on protein extracted from the leaves of Zea mays
  137. The Penetration of Acetylcholine into the Central Nervous System of the Cockroach Periplaneta Americana L
  138. The activation of diazinon by ganglia of the cockroach Periplaneta americana L. and its action on nerve conduction and cholinesterase activity
  139. Mixed Magnesium-Aluminium hydroxides. II. Structure and structural chemistry of synthetic hydroxycarbonates and related minerals and compounds
  140. Mixed magnesium-aluminiun hydroxides. I. Preparation and characterization of compounds formed in dialysed systems
  141. Method of supplying water to soil at osmotically controlled potentials
  142. Effect of soil moisture conditions on uptake of systemic insecticides from soil by plants
  143. Absorption of disulfoton by soil
  144. Analytical methods for potassium and their correlations with crop response - Soil potassium and magnesium
  145. Fertiliser requirements of potatoes in relation to kind of soil and soil analysis
  146. Long distance movement of two migrant lepidoptera in relation to synoptic weather conditions
  147. Causes of resistance to DDT in a Diazinon‐selected and a DDT‐selected strain of house flies
  148. Effect of some phosphate fertilizers on the oxidation of elemental sulfur in soil
  149. Protein metabolism
  150. Introduction: the purpose and function of the International Biological Programme
  151. Varietal differences in the nodulation of subterranean clover
  152. The mode of action of weather on insect flight
  153. Leaf protein research in the International Biological Program
  154. The alleviation of world protein shortage
  155. Susceptibility of potato tubers to infection by Phytophthora infestans
  156. The role of water in the spread of Phytophthora infestans in the potato crop
  157. Mastigosporium leaf fleck of perennial ryegrass
  158. The construction of a lunar microcosm
  159. Epidemiology of aphid-transmitted plant-virus diseases
  160. Studies on the transmission of groundnut rosette virus by Aphis craccivora Koch
  161. A statistical programming language
  162. Multivariate Analysis and Multidimensional Geometry
  163. A Comparison of Some Methods of Cluster Analysis
  164. Methods for field trials to assess the loss of yield of crops attacked by pests. Background papers prepared for F.A.O. Symposium on crop losses Rome (1967)
  165. The Loss of Yield in a Crop of Sweet Corn (Zea Mays L.) Following the Complete Destruction of Some Plants at an Early Stage by Brown Rats (Rattus Norvegicus Berk.)
  166. Placement of fertilizers for potatoes
  167. Intra-specific mechanisms in relation to the natural regulation of numbers of Aphis fabae Scop
  168. Effects of Aphis fabae Scop, and of its attendant ants and insect predators on yields of field beans (Vicia faba L.)
  169. Changes in chlorophylls resulting from various chemical and physical treatments of leaves and leaf extracts
  170. An electric insect barrier using a neon oscillator
  171. Hand-operated micro-applicator to deliver drops of five sizes
  172. Hoosfield Continuous Barley
  173. Pesticide residues in soils
  174. Relationships between weight, volume and numbers of soil animals
  175. Changes in soil invertebrate populations caused by some organophosphorus insecticides
  176. Pesticides and the soil fauna: effects of aldrin and DDT in an arable field
  177. A new genus and species of Symphyla, Neosymphyla ghanensis, with comments on Symphyla segmentation
  178. Some effects of 2,4-dichlorophenoxyacetic acid herbicides on nematode-infested cereals
  179. The effect of a host crop and cultivations on the rate that Ditylenchus dipsaci reinfested a partially sterilized area of land
  180. The influence of plant-growth substances and their inhibitors on the host-parasite relationships of Aphelenchoides ritzemabosi in culture
  181. The effect of amino acid antimetabolites on four nematode species and their host plants
  182. Effect of temperature on the rate of development of Nacobbus serendipiticus in excised tomato roots
  183. The significance of biological races of Ditylenchus dipsaci and their hybrids
  184. The effect of resistant solanaceous plants on the sex ratio of Heterodera rostochiensis and the use of the sex ratio to assess the frequency and genetic constitution of pathotypes
  185. Acute bee-paralysis virus in adult honey bees injected with sacbrood virus
  186. The effect of temperature on the pathogenicity of the fungus Ascosphaera apis for larvae of the honeybee, Apis mellifera
  187. Nosema apis and dysentery of the Honeybee
  188. The incidence of virus diseases in the honey bee
  189. The incidence of Acarapis woodi in North American strains of Honeybee in Britiain
  190. Discussion on reports on cloud seeding experiments
  191. Evaporation from forests: a comparison of theory and observation
  192. Insect pheromones
  193. Temperature and humidity changes in lowest few thousand feet of atmosphere during a fine summer day in southern england
  194. Some aspects of large-scale turbulence and diffusion in atmosphere - lagrangian and eulerian correlations and energy spectra of geostrophic velocities
  195. Rose,cw - agricultural physics
  196. Radiation balance of natural and agricultural vegetation
  197. Reviewed Work: Environmental Measurement and Interpretation. by Robert B. Platt, John F. Griffith
  198. Local differences in the attenuation of solar radiation over Britain
  199. A ground-water recharge study in north eastern jordan
  200. The diffusive conductivity of stomata of wheat leaves
  201. Correction
  202. A 10-level atmospheric model and frontal rain
  203. Pheromones of queen honeybee (Apis mellifera L) which enable her workers to follow her when swarming
  204. Attraction of Apis mellifera drones by odours of queens of 2 other species of honeybees
  205. A sex attractant acting as an aphrodisiac in honeybee (Apis mellifera L.)
  206. Krombein,KV - trap-nesting wasps and bees
  207. Synthesis of 4-allyl- and 4-benzyl-2,6-dimethylbromobenzene from 2,6-xylidine
  208. Synthesizing pyrethrin-like insecticides
  209. Pyrethrins and related compounds. IX. Alkenylbenzyl and benzylbenzyl chrysanthemates
  210. Experiments on synthesis of pyrethrins .14. Rethrins and cyclopentadienone related to 3-methylcyclopent-2-enone
  211. 5-Benzyl-3-furylmethyl Chrysanthemate: a New Potent Insecticide
  212. Variance analysis of complete designs - some practical aspects - seeger,p
  213. Statistics of crop responses to fertilizers - rome-food-and-agricultural-organisation
  214. Omnitab - computer program for statistical and numerical analysis - hilsenrath,j, ziegler,gg, messina,cg, walsh,pj and herbold,rj
  215. Ability and attainment of short-sighted pupils