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