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