1. Needle nematodes (Longidorus spp.) and stubby‐root nematodes (Trichodorus spp.) harmful to sugar beet and other field crops in England
  2. The male genitalia of Apis dorsata(F) (Hymenoptera - Apidae)
  3. Entomophthora conidia in the air-spora
  4. The effect of temperature on the infectivity and incubation periods of the fungi Entomophthora aphidis and E. thaxteriana for the pea aphid Acyrthosiphon Pisum
  5. Effects of decreasing the light intensity on the growth of Agropyron repens (L.) Beauv. in the field
  6. Studies on the growth of seedlings of Agropyron repens (L.) Beauv. and Agrostis gigantea Roth
  7. Barley segregates resistant and susceptible to the cereal cyst‐nematode (Heterodera avenae Woll.)
  8. The influence of root temperature, Rhizobium strain and host selection on the structure and nitrogen-fixing efficiency of the root nodules of Trifolium subterraneum
  9. Anhydrous ammonia-yields and recoveries by spring wheat.
  10. Microbial heterogeneity of soil
  11. Some properties of a mechanism delaying penetration of insecticides into houseflies
  12. Interaction between the factor delaying penetration of insecticides and the desethylation mechanism of resistance in organophosphorus‐resistant houseflies
  13. The effects of soil sterilants on the cereal cyst‐nematode (Heterodera avenae Woll.), take‐all (Ophiobolus graminis Sacc.) and yields of spring wheat and barley
  14. The effect of weather on the concentration of pollen within sugar beet seed crops
  15. Fertilizer requirements of sugar beet on fen peat soils
  16. Survival of different stages of Heterodera rostochiensis at high temperatures
  17. Two Terrestrial Nematodes from the McMurdo Sound Region, Antarctica, with a Note on Anaplectus arenicola Killick, 1964
  18. Four Dorylaimina (Nematoda) from Wicken Fen, Cambridgeshire
  19. Failure of Heterodera carotae, H. cruciferae and H. goettingiana to interbreed in vitro
  20. The diversity of soil nematode faunas
  21. Root penetration of smeared soil surfaces
  22. The effects of silicone coatings on leaves
  23. A glasshouse method for testing chemicals for control of potato common scab
  24. Tests of dibutyltin compounds as potato blight fungicides
  25. Germination of resting spores of Plasmodiophora brassicae
  26. Lagena radicicola and Rhizophydium graminis, two common and neglected fungi
  27. Fertilizer nitrogen and growth regulators for field beans (Vicia faba L.) I The effects of seed bed applications of large dressings of fertilizer nitrogen and the residual effects on following winter wheat
  28. Fertilizer nitrogen and growth regulators for field beans (Vicia faba L.) II The effects of large dressings of fertilizer nitrogen, single and split applications, and growth regulators
  29. Age and origin of aeolian sand in the Vale of York
  30. An electron microscope study of tomato spotted wilt virus in sections of infected cells and in negative stain preparations
  31. Honey-coloured, sessile Endogone spores III Wall structure
  32. Honey-coloured, sessile Endogone spores II Changes in fine structure during spore development
  33. Honey-coloured, sessile Endogone spores
  34. The effects of three crops and of the N fertilizer given to them on the yield of following barley
  35. Variations in the resistance to Heterodera rostochiensis of potatoes derived from Solarium tuberosum ssp. andigena and S. multidissectum
  36. Morphometrics of Males and Larvae of Ten Heterodera Rostochiensis Populations and the Influence of Resistant Hosts
  37. Bees in agriculture - Bee poisoning in 1969
  38. Bee poisoning in 1966
  39. The synergetic effect of hydrogen ions on the cation exchange of potassium in micas
  40. Cation exchange properties of micas: II. Hysteresis and irreversibility during potassium exchange
  41. Manuring the beet seed crop grown in England.
  42. Pollen release by diploid and tetraplois sugar-beet plants
  43. Patterns of distribution of insects near a windbreak of tall trees.
  44. How shelter affects inect pests
  45. Algorithm AS 33: Calculation of hypergeometric sample sizes
  46. A diffusive resistance porometer for field use. I. Construction
  47. Surveys of sheep dipping in Britian
  48. Rate processes in the desorption of phosphate from soils by ion‐exchange resins
  49. Weather 1969 XV Rothamsted Experimental Station Harpenden
  50. The control of common scab of potatoes by irrigation
  51. Analysis of differences in yield between six sugar‐beet varieties
  52. A multivariate analysis computer program
  53. The errors of long-term experiments
  54. Interrelationships of fungi, weeds, crops and herbicides.
  55. Light and electron microscopy of cells infected with tobacco necrosis and satellite viruses
  56. Serological relationship of strains of tobacco necrosis virus and their ability to activate strains of satellite virus
  57. Distribution of snail-killing flies (Diptera, Sciomyzidae) in the British Isles
  58. Lower limits of molecular weights of compounds excluded from sephadex G-25 eluted with aqueous acetone mixtures : Application of the results to the separation of the components of tannic acid
  59. Optical properties of organic complexes of montmorillonite
  60. The control of the potato cyst-nematode
  61. Weeds, herbicides and plant virus diseases
  62. Notes on some plant bugs and predators of aphids caught on sticky traps in sugar beet fields in southern England, 1965-1968
  63. Effect of pelleting Sugar Beet seed with menazon
  64. The Abundance of Grass Aphids in Eastern England as shown hy Sticky Trap Catches
  65. Effect of plant spacing and time of sowing of sugar beet on aphid infestation and spread of virus yellows
  66. Soil moisture and the infection of young potato tubers by Streptomyces scabies (common scab)
  67. The fumigant effect of metaldehyde on slugs
  68. Observations on feeding and egg development of the wheat bulb fly Leptohylemyia coarctata (Fall.)
  69. Infestation of Wheat Plants by the Larvae of Leptohylemyia coarctata (Fall.) in an Insectary
  70. Endogone spore numbers in soil and vesicular-arbuscular mycorrhiza in wheat as influenced by season ans soil treatment
  71. Metabolism of 3-chlorobenzoic acid by Azotobacter species
  72. The amino acid composition, antigenicity, and other characteristics of the satellite viruses of tobacco necrosis virus
  73. Effects of population-density on alienicolae of aphis-fabae scop 1 The effect of crowding on the production of alatae in the laboratory
  74. Effects of population-density on alienicolae of aphis-fabae scop 2 The effects of crowding on the expression of migratory urge among alatae in the laboratory
  75. Effects of population-density on alienicolae of aphis-fabae scop 3 The effect of isolation on the development of form and behaviour of alatae in a laboratory clone
  76. Silver staining of insect central nervous systems by the Bodian protargol method
  77. Biosystematic studies of Salticella fasciata (Meigen), a snail-killing fly (Diptera: Sciomyzidae)
  78. Some experiments with different formulations of organophosphorus insecticides as seed dressings to control wheat bulb fly (Leptohylemyia coarctata)
  79. The Effects of Known Amounts of γ‐BHC and Organophosphorus Seed Dressings on Growth of Wheat Seedlings and on Attack by Larvae of Wheat Bulb Fly (Leptohylemyia coarctata (Fall.))
  80. Microbiological degradation of parathion
  81. The influence of multiple mating on the reproduction and genetics of Heterodera rostochiensis and H. schachtii
  82. The interrelationships of some Heterodera spp. indicated by the specificity of the male attractants emitted by their females
  83. Observations On the Fecundity and Longevity of Tylenchus Emarginat Us On Sitka Spruce Seedlings At Different Temperatures
  84. The classification of soil profiles by traditional and numerical methods
  85. Report on leaf scorch decline of coconuts
  86. The effect of sowing date and harvesting date on the yield of sugar beet
  87. Needle nematodes (Longidorus spp.) and stubby‐root nematodes (Trichodorus spp.) harmful to sugar beet and other field crops in England
  88. A neotype for Cephalobus persegnis Bastian, 1865, redescription of the species, and observations on variability in taxonomic characters
  89. The oxidation of pyridoxal and related compounds by pea-seedling extracts or systems containing peroxidase
  90. The cytochrome c-catalysed oxidation of ascorbate in the presence of sodium dodecyl sulphate and NNN'N'-tetramethyl-p-phenylenediamine
  91. Improving the health of seed potatoes
  92. Improving the health of seed potatoes
  93. Field trials of anti-Capsid insecticides on farmers' cocoa in Ghana, 1956-60. 1, Comparing the effects of treatments by assessing subsequent damage
  94. A comparative study of red clover vein mosaic virus and some other plant viruses
  95. Some biological effects of ammonia injected into soils
  96. Nitrification inhibitors their occurrence, production and effects of their use on crop yields and composition
  97. The effects of the nitrogen in soils on the growth, composition and yield of crops
  98. The decomposition of crotonylidene di-urea in soil and the recovery of nitrogen by ryegrass
  99. Effects of fertilizer-nitrogen and water supply on distribution of dry matter and nitrogen between the different parts of wheat
  100. The effect of ammonium sulphate treated with a nitrification inhibitor, and calcium nitrate, on growth and N-uptake of spring wheat, ryegrass and kale
  101. Effects of fertilizer-nitrogen and water supply on distribution of dry matter and nitrogen between the different parts of wheat
  102. Some causes of error in determination of total nitrogen in plant material
  103. Experiments with kiln-dried poultry manure on agricultural crops and vegetables at Rothamsted, Woburn and other centres in 1933-39.
  104. Effect of flower shapes and nectar guides on the behaviour of foraging honeybees
  105. The flower constancy of bumblebees
  106. The behaviour of wasps (Vespula germanica L. andV. Vulgaris L.) when foraging
  107. The behaviour of wasps (Vespula germanica L. andV. Vulgaris L.) when foraging
  108. Preliminary investigations on the occupation of artificial nests by Osmia rufa L.(Hymenoptera, Megachilidae)
  109. Exposure of the Nasonov gland by honeybees (Apis mellifera) collecting water
  110. Interrelationships of nematodes, weeds, herbicides and crops.
  111. Nursery and forest extension experiments in tree nutrition. Nitrogen concentrations in conifer transplants and subsequent growth in the forest.
  112. The effect of small doses of nematicides on migratory root‐parasitic nematodes and on the growth of sugar beet and barley in sandy soils
  113. The effect of D–D, chloropicrin and previous crops on numbers of migratory root‐parasitic nematodes and on the growth of sugar beet and barley
  114. Inactivation by ultraviolet radiation at different wavelengths of the RNA isolated from potato virus X
  115. Longevity of males and fertilisation of females of Heterodera rostochiensis.
  116. The effects of gamma radiation on Heterodera rostochiensis.
  117. A simple vacuum-gauge scale expander
  118. The Relationship between the Structure and the Activity of Pyrethroids
  119. Effect of Fumigants on Fungi in Buried Wheat Straw
  120. The taxonomic status of British water voles Genus Arvicola
  121. Cereal Pratylenchus spp. in England and Wales, and their Recognition
  122. Maintaining nematode cultures under mineral oil.
  123. Plant and soil nematode population changes in wheat grown continuously in ploughed and in unploughed soil
  124. Root‐lesion Nematodes (Pratylenchus spp) in Britain and their Identification
  125. The composition of the cyst wall of the beet cyst-nematode Heterodera schachtii
  126. The carrying capacity of the land in the year 2000
  127. Soils and fertilisers
  128. Soil fertility problems in cereal growing in temperate zones
  129. Losses of nitrogen and phosphorus from agricultural land
  130. The quality of stored main crop potatoes in Great Britain
  131. Effects of green manuring, farmyard manure, and straw on the organic matter of soil and of green manuring on available nitrogen
  132. Soil water measurement by a low‐resolution nuclear magnetic resonance technique
  133. Movement of gases in soil respiration.
  134. Heterogeneous distribution of nutrients, air and water within the soil
  135. Potato cyst nematode: one species or two?
  136. The stacked-disk structure of tobacco mosaic virus protein
  137. The effect of flame cultivation on eyespot disease of winter wheat
  138. Chemistry of communication in the honeybee - a lecture by RK Callow
  139. Effect of previous cropping and manuring on the nitrogen fertilizer needed by sugar beet
  140. Effects of soil compaction on yield and fertilizer requirement of sugar beet
  141. Sodium and potassium relationships in sugar beet
  142. The relationship between exchangeable soil magnesium and response by sugar beet to magnesium sulphate
  143. Comparisons of liquid and solid fertilizers and anhydrous ammonia for sugar beet
  144. Air movement near windbreaks and a hypothesis of the mechanism of the accumulation of airborne insects
  145. A bivane direction indicator and a sensitive vertical anemometer for measuring components of wind in sheltered places
  146. Distribution of aphids in cereal crops
  147. Root temperature and root-hair infection ofTrifolium subterraneum L. cv. Cranmore
  148. Nodulation and nitrogen fixation by Vigna sinensis and Vicia atropurpurea: The influence of concentration, form, and site of application of combined nitrogen
  149. Myxomycetes on Beet seed
  150. Experiments on the effect of plant losses after singling on the yield of sugar beet
  151. Biophysical aspects of nervous activity in relation to studies on the mode of action of insecticides
  152. Field trials of anti-Capsid insecticides on farmers' cocoa in Ghana, 1956-60. 1, Comparing the effects of treatments by assessing subsequent damage
  153. Indolyl-3-acetic acid formation by Azotobacter chroococcum
  154. Influence of cultivations on soil properties
  155. Cation exchange properties of micsas III Release of potassium sorbed by potassium depleted micas
  156. Polarography of demeton, disulfoton and phorate
  157. Multi-level nitrogen tests for cereals
  158. Nitrogen requirement of sugar beet grown on mineral soils
  159. Some recent ideas on fertilizer response curves
  160. Pollution of soils
  161. The distribution of sulphur in the mud of Lake Victoria
  162. The influence of root temperature on root-hair infection of Trifolium subterraneum L. by Rhizobium trifolii Dang.
  163. The Infection of Trifolium subterraneum Root Hairs by Rhizobium trifolii
  164. Effect of low temperature pre-treatment on infection of clover root hairs by Rhizobium
  165. Potential protein sources for human food
  166. Light and Temperature Thresholds for Take-Off by Aphids
  167. Aggregation and the transformation of counts of Aphis fabae Scop, on beans
  168. Chlorophyll bleaching systems in leaves
  169. Lipoxidase activity of leaves
  170. Studies on the genus Thermomonospora
  171. A herbicide-induced abnormality in sugar beet
  172. Sulphur as a nutrient for Sitka spruce (Picea sitchensis) seedlings and radish (Raphanus sativus) grown on a sandy podzol in England
  173. Glasshouse and leaf canopy enclosures for studying the effects of environment on the growth and nature of the photosynaptic apparatus
  174. Virus-like particles in the plant hopper Javesella pellucida Fab.
  175. A note on Burnaby’s character-weighted similarity coefficient
  176. Classification and Geology
  177. Residual effects of soil fumigation on soil respiration and mineralization
  178. Inorganic soil phosphorus I. Changes in monocalcium phosphate potentials on cropping
  179. Inorganic soil phosphorus: II. Changes in monocalcium phosphate and lime potentials on mixing and liming soils
  180. Yields of, and N uptakes by, some grass species and varieties under different glasshouse conditions
  181. Residual value of basic slag, Gafsa rock phosphate and superphosphate in a sandy podzol
  182. Total phosphorus contents of soils by perchloric acid digestion and sodium carbonate fusion
  183. Recent work on wheat bulb fly
  184. Energy relationships between larvae of Phaedon cochleariae (Coleoptera; Chrysomelidae) or Plutella maculipennis (Lepidoptera; Plutellidae) und radish or turnip plants
  185. Effects of flea beetles on the yield of radish
  186. Suspected insecticide resistance mechanism in the peach–potato aphid
  187. Comparison of the biology of Myzus persicae Sulz. resistant and susceptible to dimethoate
  188. Effects of varying the hostplant and environmental conditions on the feeding and reproduction of Aphis Fabae
  189. Chlorophyllase of sugar-beet leaves
  190. The value of residues from long-period manuring at Rothamsted and Woburn I A summary of the results of experiments started by Lawes and Gilbert
  191. A semi-quantitative hydrological classification of soils in North-East England
  192. A measured volume dispenser for watering plants
  193. Seed production by couch grass (Agropyron repens)
  194. The soils of Hertfordshire
  195. The value of residues from long-period manuring at Rothamsted and Woburn II A summary of the results of experiments started by Lawes and Gilbert
  196. The value of residues from long-period manuring at Rothamsted and Woburn III The experiments made from 1957 to 1962, the soils and histories of the sites on which they were made
  197. The value of residues from long-period manuring at Rothamsted and Woburn IV The value to arable crops of residues accumulated from superphosphate
  198. The value of residues from long-period manuring at Rothamsted and Woburn V The value to arable crops of residues accumulated from potassium fertilizers
  199. The residual value of farmyard manure and superphosphate in the Saxmundham Rotation II Experiment, 1899-1968
  200. Assessment of terrestrial invertebrate populations
  201. Persistent pesticides in the environment
  202. Chemical communications in insects : behavioral and ecologic aspects
  203. A simple way of purifying several insect viruses
  204. Disinfection of honeybee combs by gamma irradiation II European foul brood disease
  205. Musings of an erstwhile plant pathologist
  206. The effect of soil pH on potassium intensity and release of non-exchangeable potassium to ryegrass
  207. A diffusive resistance porometer for field use. II. Theory, calibration and performance
  208. Chemical communication in insects : behavioral and ecologic aspects
  209. Woburn irrigation, 1960-8 .6. Results for rotation crops
  210. Woburn irrigation, 1960-8 .5. Results for leys
  211. Woburn irrigation, 1960-8 .4. Design and interpretation
  212. The water cycle
  213. A possible source of error in estimation of stomatal resistance
  214. A major low-level air current near indian ocean during northern summer - interhemispheric transport of air in lower troposphere over western indian ocean
  215. Air motion and precipitation growth in a wave depression
  216. Hive entrance finding by honeybee (Apis-mellifera) foragers
  217. The efficient use of function minimization in non-linear maximum-likelihood estimation
  218. Insecticidal activity of the pyrethrins and related compounds: III.—Penetration of pyrethroid insecticides into mustard beetles (Phaedon cochleariae)
  219. The pyrethrins and related compounds: X.—The methylbenzyl chrysanthemates
  220. Scientific basis of contraception
  221. An oscillating insect barrier
  222. Influence of soil moisture on the performance of granular systemic insecticides applied to soil
  223. Genstat: a general statistics program
  224. Some factors affecting the activities of dinitrophenol fungicides
  225. Improved procedures for clearing roots and staining parasitic and vesicular-arbuscular mycorrhizal fungi for rapid assessment of infection
  226. Use of the quantity/potential relationship to provide a scale of the ability of extractants to remove soil potassium
  227. The uptake of initially available soil potassium by ryegrass
  228. Potassium uptake by potatoes
  229. The potassium Q/l relationships of soils given different K manuring
  230. Potassium : calcium exchange in soils of the Broadbalk experiment at Rothamsted
  231. A note on resolving soil cation exchange capacity into "mineral" and "organic" fractions