1. Discharge of conidia of Entomophthora thaxteriana Petch from the pea aphid Acyrthosiphon pisum Harris
  2. Effects of light intensity, photoperiod and nitrogen on the growth of seedlings of Agropyron repens (L.) Beauv. and Agrostis gigantea Roth
  3. Germination of seeds and emergence of seedlings of Agropyron repens (L.) Beauv.
  4. Stochastic model fitting by evolutionary operation
  5. The National Survey of health and development: 2. Rate of school progress between 8 and 15 years and between 15 and 18 years
  6. The national survey of health and development: 1. Educational attainment
  7. Water movement in dry soils II An analysis of hysteresis
  8. A total-consumption Laminar-flow nebulizer and burner system for flame spectroscopy
  9. Manuring potatoes
  10. The isolation of soil clostridia
  11. Bee poisoning in 1970
  12. Effect of processing on measurements of Heterodera rostochiensis larvae
  13. The fertility status of soil potassium related to K: Ca exchange isotherms from 'Double-label' experiments
  14. Radioisotopes to estimate the dispersal of insecticides in the environment and irradiation techniques for the study of insect populations
  15. Iterative procedures for missing values in experiments
  16. Aluminium distribution in soils in relation to surface area and cation exchange capacity
  17. Persistence of organochlorine insecticides on different substrates under different environmental conditions. I. The rates of loss of dieldrin and aldrin by volatilisation from glass surfaces
  18. Control of common scab of potato
  19. Tests of aryltin compounds as potato blight fungicides
  20. The effect of nitrogen on the growth and sugar content of sugar-beet
  21. The influence of phosphate and other nutrients on the development of vesicular-arbuscular mycorrhiza in culture
  22. The analysis of experiments on hydrodynamic dispersion
  23. Gravity segregation during miscible displacement experiments
  24. Hydrodynamic dispersion in aggregated media: 2. Effects of velocity and aggregate size
  25. Potassium requirements of herbage in relation to nitrogen
  26. Effects of potassium and sodium on the contents of soluble carbohydrates and nitrogenous compounds in grass
  27. Diagnosis of resistance to organophosphorus insecticides in Myzus persicae (Sulz.)
  28. Advanced sugar–beet seed
  29. A critique of the methods and results of the British national surveys of disease in farm animals. I. Discussion of the surveys
  30. A critique of the methods and results of the British national surveys of disease in farm animals. II. Some general remarks on population surveys of farm animal disease
  31. A new method for calibrating infrared gas analysers
  32. Observations on blight (Phytophthora infestans) and resistant potatoes at Toluca, Mexico
  33. Seasonal changes in the population structure of wasp colonies (Hymenoptera: Vespidae)
  34. Effect of aluminium on growth of tea (Camellia sinensis) and its uptake of potassium and phosphorus
  35. Electron microscopy of cells infected with narcissus mosaic virus
  36. The use of computers for statistical analysis: A review of aims and achievements
  37. Weather 1970 Rothamsted Experimental Station Harpenden
  38. The control of common scab by the use of irrigation
  39. Extraction of nematodes from sterile culture
  40. The swarming behaviour of honeybee colonies kept in small hives and allowed to outgrow them
  41. The relative concentration of infective intact virus and RNA of four strains of tobacco mosaic virus as influenced by temperature
  42. In vivo phenotypic mixing between two strains of tobacco mosaic virus
  43. Phenotypic mixing between strains of tobacco mosaic virus
  44. An unusual inclusion in plants infected with a tobacco mosaic virus mutant
  45. A Comparison of Some Distance Measures Applicable to Multinomial Data, Using a Rotational Fit Technique
  46. The spectrophotometric determination of the purity of commercial dithizone and the purification of small amounts of the reagent by chromatography
  47. The movement of Dieldrin in young cotton plants
  48. The shrinkage of clay soils during impregnation by polyethylene glycols
  49. Sugar beet seedling emergence prediction from radiographs
  50. Abundance of Aphids and some Insects,that prey on them in Suffolk, as shown catches on Sticky Traps
  51. Observations on changes in the female reproductive system of the wheat bulb fly Leptohylemyia coarctata (Fall.)
  52. Retention and distribution of dry powder and liquid formulations of insecticides and fungicides on commercially dressed cereal seed
  53. Limitations of seed-treatments for pest control
  54. Purification of tobacco ribonuclease by affinity chromatography
  55. Irrigation as a Practical Means to Control Potato Common Scab (Streptomyces scabies)
  56. Plant growth responses to vesicular‐arbuscular mycorrhiza I Growth of Endogon-inoculated plants in phosphate-deficient soils
  57. Plant growth responses to vesicular‐arbuscular mycorrhiza II In unsterilized field soils
  58. The Leeuwenhoek Lecture 1970 Airborne microbes: their significance and distribution
  59. The morphology of the terminal area of the round-cyst nematodes, SG Heterodera rostochiensis and allied species
  60. A simple method of preparing nematodes for scanning electron microscopy
  61. The role of the helper virus in aphid transmission of potato aucuba mosaic virus and potato virus C
  62. New evidence on the mechanism of aphid transmission of potato C and potato aucuba mosaic viruses
  63. Changes induced by magnesium ions in the morphology of some plant viruses with filamentous particles
  64. Persistence to rainwashing of DDT wettable powders
  65. Tylenchus emarginatus and Tylenchorhynchus dubius associated with Sitka Spruce (Picea sitchensis) Seedlings
  66. A neotype for Eucephalobus striatus (Bastian, 1865) Thorne, 1937 (Nematoda) and redescription of the species from topotypes and their progeny
  67. Stem Eelworm (Ditylenchus dipsaci), a Seed and Soil‐borne Pathogen of Field Beans (Vicia faba)
  68. Aphelenchoides Rutgersi N. Sp. (Nematoda: Aphelenchoidea), Description and Morphometrics, With Observations On a. Dactylocercus Hooper, 1958 and a. Cibolensis Riffle, 1970
  69. Root rot and wilt of field beans (Vicia faba)
  70. Internal data structures
  71. Relationships between soil and plant nutrient status in commercial tomato houses
  72. Nature and value of residual fertilizer nitrogen in soils
  73. The late Weichselian sequence in the Vale of York
  74. Stimuli Eliciting Mating Behaviour of Bumblebee (Bomb Us Pratoruml.) Males
  75. The effect of giving pollen and pollen supplement to honeybee colonies on the amount of pollen collected
  76. Interference between rows and between plants within rows of a wheat crop, and its effects on growth and yield of differently-spaced rows
  77. Isobutylidene diurea and other nitrogen fertilizers for seedlings and transplants ofPicea sitchensis in two English forest nurseries
  78. Carbohydrates in hay on self‐heating to ignition
  79. The measurement of arthropod numbers and activity by sampling with sweep-nets and traps
  80. The extraction from soil of small arthropods by the dry-funnel method
  81. The place of sample survey in crop loss estimation
  82. Genetical changes in Rhizobium bacteria and in their bacteriophages during coexistence
  83. Effects of amino acids on the reproduction of Heterodera rostochiensis
  84. Grain yield and incidence of take‐all (Ophiobolus graminis Sacc.) in wheat grown in different crop sequences
  85. Oxidative metabolism of pyrethrins in mammals
  86. Effects of soil fumigation on soil nitrogen and on disease incidence in winter wheat
  87. Interactions between Heterodera rostochiensis Woll. and Verticillium dahliae Kelb. on potatoes and the effect of CCC on both
  88. Defective Strains and Phenotypic Mixing
  89. Population changes and development of Meloidogyne naasi in the field
  90. Epidemiology and control of weevil-transmitted viruses in field beans
  91. Potassium for grassland : present use and future possibilities
  92. Value and valuation of fertilizer residues
  93. Fertiliser practice in England and Wales: a new series of surveys
  94. Factors defining spontaneous heating and ignition of hay
  95. Loess in the soils of north Norfolk
  96. Geochemistry, micropalaeontology and origin of the middle Lias ironstones in northeast Yorkshire (Great Britain)
  97. Postglacial soil formation in the loess of Pegwell bay, Kent (England)
  98. Oxidative metabolism of pyrethrins in mammals
  99. Disk electrophoresis of proteins of Heterodera species and pathotypes of Heterodera rostochiensis
  100. A comparison of soils on coal measures in SW Ireland and SE Wales
  101. Oxidative dimerisations of natural rethrolones and related compounds with manganese dioxide
  102. Effects of nitrogen fertilizer, plant population and irrigation on sugar beet: I. Yields
  103. Fertilizer requirements of sugar beet on peaty mineral and organic mineral soils
  104. The effects of soil fumigation and nitrogen fertilizers on nematodes and sugar beet in sandy soils
  105. Predicting the amount of nitrogen fertiliser needed for sugar‐beet by soil analysis
  106. Some effects of partial sterilization on mineral nitrogen in a light soil
  107. Prediction of the fertiliser needs of sugar‐beet grown on fen peat soils
  108. Effects of nitrogen fertilizer, plant population and irrigation on sugar beet: III. Water consumption
  109. An analysis of the effects of nutrient supply on the growth of potato crops
  110. Uptake of magnesium and other fertilizer elements by sugar beet grown on sandy soils
  111. Changes in sugar beet husbandry and some effects on pests and their damage
  112. Changes in organo‐chlorine usage on sugar beet, and progress in the replacement of dieldrin seed treatment
  113. Entomophthora infecting the cereal aphids Metapolophium dirhodum and Sitobion avenae
  114. Scanning electron microscopy of plant roots
  115. Organo‐mercury fungicide treatment of sugar‐beet seed
  116. Amino acid composition and In Vitro digestibility of some protein fractions from three species of leaves of various ages
  117. The site of action of pyrethrin I in the nervous system of the cockroach Periplaneta Americana
  118. The spread of topically‐applied pyrethrin I from the cuticle to the central nervous system of the cockroach Periplaneta americana
  119. Field-trials of anti-capsid insecticides on farmers' cocoa on Ghana, 1956-60. 2, Effects of different insecticides compared by counting capsid-counting compared with counting the percentage of newly damaged treses
  120. The petrography and origin of deposits filling solution pipes in the Chalk near South Mimms, Hertfordshire
  121. The soils of the Malham Tarn area
  122. Behaviour of Ophiobolus graminis on slides buried in soil in the presence or absence of wheat seedlings
  123. Uranium content of peaty soils rich in molybdenum and selenium from Co. Limerick, Eire
  124. The structure, composition and origin of the subcrystalline layer in some species of the genus Heterodera
  125. Pepper veinal mottle virus‐a new member of the potato virus Y group from peppers (Capsicum annuum L. and C. frutescens L.) in Ghana
  126. Viruses infecting cacao
  127. The relationship between soil phosphorus and response by sugar beet to phosphate fertilizer on mineral soils
  128. Residual phosphate experiments on experimental husbandry farms
  129. Migration records 1966 and 1967
  130. Resistance to organophosphorus insecticides in the SKA strain of houseflies (Musca domestica)
  131. Metabolism of 3‐chloro‐4‐methoxyaniline and some N‐acyl derivatives in soil
  132. O-2-acetyl-6-methyl-pyrimidin-4-yl o, o-diethyl phosphorothioate - a new degradation product diazinon
  133. The control of insect-transmitted viruses of cereals
  134. The mobilization of trace elements by aerobically decomposing plant material under simulated soil conditions
  135. Some obstacles to innovation
  136. Selection for increased nitrogen fixation in red clover
  137. Perspectives in biological nitrogen fixation
  138. Experiments on nitrogen fixation by nodulated lucerne
  139. Lunar cycles in the distribution and abundance of airborne insects in the equatorial highlands of East Africa
  140. Effects of plant density and nitrogen fertilizer on growth and yield of short varieties of wheat derived from Norin 10
  141. Fertilisers amd society - Seventh Francis new memorial lecture
  142. Thermoactinomyces sacchari sp.nov., a Thermophilic Actinomycete Causing Bagassosis
  143. The microbiology of moist barley storage in unsealed silos
  144. Endospore formation and germination in a new Thermoactinomyces species
  145. Fixation and electron microscopy of the Rothamsted culture of henbane mosaic virus
  146. European wheat striate mosaic disease in 1970
  147. Possible wind transport of coffee leaf rust across the Atlantic Ocean
  148. Bromine in wheat grown on soil fumigated with methyl bromide
  149. Quantity‐intensity relationships for labile sodium in field soils
  150. Effects of magnesium on cereals, potatoes and leys grown on the 'continuous cereals' site at Woburn
  151. Controlling soil pH with different N-fertilizers in experiments with ryegrass in pots
  152. The chloride balance in a fertiliser experiment on sandy soil
  153. The Behaviour of Plants in Various Gas Mixtures
  154. Comparison of Natural and Artificial Sources of Light
  155. Statistical methods of comparing different multivariate analyses of the same data
  156. Internal data structures
  157. A General Coefficient of Similarity and Some of Its Properties
  158. Inhibition of nitrification in soil by carbon disulphide from rubber bungs
  159. An Investigation on the Direct Effect of Dimethoate and Demeton-S-Methyl on the Yield and Quality of Field Beans
  160. Evaluation of phosphate fertilizers. III. Immediate and residual values of potassium metaphosphate and magnesium ammonium phosphate for potatoes, radishes, barley and ryegrass
  161. Residual value of phosphate fertilizers on neutral and calcareous soils
  162. Pathotypes in perspective
  163. The structure of the females of the round‐cyst nematodes
  164. Electrophoresis and morphometrics of the round-cyst nematodes
  165. The round-cyst species of Heterodera as a group
  166. Electrophoresis of protein from the different populations of the postato cyst nematode
  167. The distribution of eggs, larvae and plants within crops attacked by wheat bulb fly Leptohylemyia coarctata (Fall.)
  168. Potassium residues in soils from experiments at Rothamsted and Woburn
  169. Seed production of Agropyron epens (L.) Beauv in arable crops in England and Wales in 1969
  170. A preliminary study of the agronomic factors affecting the yield of extractable leaf protein
  171. Production and use of leaf protein
  172. Nematicides and the soil fauna
  173. The symptoms of attack by swede midge (Contarinia nasturtii) and effects on the yield of swedes
  174. Control of wireworms with organophosphorus and carbamate insecticides
  175. Wilks's criterion: A measure for comparing the value of general purpose soil classifications
  176. Honey-bee viruses
  177. Honey bee paralysis : retrospect and prospect : A lecture given to the Central Association of Bee-keepers on the 10th February 1971
  178. Potassium in soils under different cropping systems:1. Behaviour of K remaining in soils from classical and rotation experiments at Rothamsted and Woburn and evaluation of methods of measuring soil potassium
  179. Input/Output in statistical programming
  180. Statistical computing and computer languages
  181. Algorithm AS 43: Variable Format in Fortran
  182. The mating behaviour of the honeybee (Apis mellifera L.)
  183. Insecticidal activity of the pyrethrins and related compounds IV.—Essential features for insecticidal activity in chrysanthemates and related cyclopropane esters
  184. The pyrethrins and related compounds. Part XI. Synthesis of insecticidal esters of 4-hydroxycyclopent-2-enones (nor-rethrins)
  185. The pyrethrins and related compounds. Part XII. 5-Substituted 3-furoates and 3-thenoates, intermediates for synthesis of insecticidal esters
  186. The pyrethrins and related compounds. XIII. Insecticidal methyl‐, alkenyl and benzyl‐substituted furfuryl and furylmethyl chrysanthemates
  187. Statistics in Biology .2. - Bliss, C. I.
  188. Seeds of change - green revolution and development in 1970s - brown,lr
  189. Biosphere
  190. Basis of automatic classification - french - lerman,ic
  191. The algebraic basis of classical multivariate methods
  192. Some factors affecting the activities of dinitrophenol fungicides. II.—Use of g.l.c. partition data in studies of chemical structure/fungicidal activity against powdery mildew
  193. Fungicidal activity and chemical constitution. XVIII. The activity of 4-(1-cyclo-, 1-iso- and 1-n-propylalkyl)-2, 6-dinitrophenols against powdery mildews
  194. Studies on decomposition of c14 labelled organic matter in soil
  195. A comparison of liveweight gains of beef cattle with values predicted from energy intakes measured as starch equivalent or metabolisable energy
  196. The transport of potassium to ryegrass roots in soils with and without added potassium
  197. Potassium in soils under different cropping systems. 2. The effects of cropping systems on the retention by the soils of added K not used by crops