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