1. Migration of Laphygma exigua Hubner (Lepidoptera: Noctuidae) to the British Isles in relation to large-scale weather systems
  2. Moth immigrations in the British Isles in July 1968
  3. Effect of seedling treatment on growth and yield of sugar beet in the field
  4. Persistent effects of seedling treatment on growth of sugar beet in pots
  5. Photosynthesis in sugar beet depends on root growth
  6. Heterodera latipons n. sp., a cereal cyst nematode from the Mediterranean region
  7. Two marine species of Aphelenchoides
  8. The relation between stylet and body length in Aphelenchus avenae with observations on Paratylenchus nanus
  9. Investigations on fecundity of Aphelenchus avenae
  10. The mutation of some virulent rhizobiophages into the temperate form
  11. Residual Infectivity and the Extent of Photoreactivation in Three Different Host Plants of uv-irradiated Potato Virus X
  12. Changes in a Heterodera rostochiensis population through the growing season
  13. Apparatus for measuring nematode movement
  14. Effect of CCC on Eyespot (Cercosporella herpotrichoides) of Winter Whear
  15. Effect of paraflan wax on field control of potato blight by copper oxychloride
  16. Effects of spraying plants with suspensions of inert dusts
  17. Aerodynamic and surface factors in evaporation
  18. Effects of soil fumigation on disease incidence, growth, and yield of spring wheat
  19. Action spectrum for inactivation of the infectivity of potato virus X by U.V. radiation
  20. Spermatheca shape in Trophurus spp
  21. Pratylenchus pinguicaudatus n. sp.(Pratylenchinae: Nematoda) with a key to the genus Pratylenchus.
  22. Fertilizers in 2000 AD Phosphorus in agriculture
  23. Plant nutrient cycles
  24. Using chemicals to increase soil productivity
  25. Types of fertilizers used on farm crops in England and Wales, 1966
  26. Queen confinement, queen piping and swarming in Apis mellifera colonies
  27. The Pleistocene deposits of Holderness, East Yorkshire
  28. Age and insect fauna of the Dimlington Silts, East Yorkshire
  29. The mineralogy of Palaeogene sediments in northeast Kent (Great Britain)
  30. The absence of photoreversible pyrimidine dimers in the RNA of ultraviolet-irradiated tobacco mosaic virus
  31. Species and sex-specific compounds from the heads of male bumblebees (Bombus spp.)
  32. The scent gland complex of the adult cotton stainer bug, Dysdercus intermedius
  33. The morphology of the scent glands of Dysdercus intermedius Distant (Hemiptera: Pyrrhocoridae) and a preliminary analysis of the scent gland secretions of the fifth instar larvae
  34. The effect of farmyard manure on the fertilizer requirement of sugar beet
  35. The effects of magnesium fertilizers on yield and chemical composition of sugar beet
  36. Trials on the control of Docking disorder in sugar beet; seed and row treatment with nematicides
  37. Reduction of acetylene by nodules of Trifolium subterraneum as affected by root temperature, Rhizobium strain and host cultivar
  38. Peat Culture of Rhizobium trifolii: an Examination by Electron Microscopy
  39. Growth of Trifolium subterraneum L. Selected for Sparse and Abundant Nodulation as Affected by Root Temperature and Rhizobium Strain
  40. Entomophthora species attacking aphids in England, 1962–66
  41. Entomophthora species attacking aphids in England, 1962–66
  42. Effects of nitrogen and potassium fertilisers on contents of carbohydrates and free amino acids in Italian ryegrass I Effects on growth and soluble‐carbohydrate contents of leaves, stubble and roots
  43. Monarch butterflies coinciding with American passerines in Britain and Ireland in 1968
  44. Interference by cyanide with the measurements of papain hydrolysis
  45. Effect of storage and lipid extraction on the properties of leaf protein
  46. Interactions of Azotobacter with rhizosphere and root-surface microflora
  47. Zeolites of the elinoptilolite–heulandite type in sediments of South-East England
  48. Thin windows for flow proportional counters in x-ray fluorescence spectrometers
  49. Partial silicification of chalk fossils from the Chilterns
  50. The diminution of sulphur contamination of powder specimens in X-ray fluorescence analysis
  51. The determination of sulphur in soils by X-ray fluorescence analysis
  52. Delayed Exchange of Potassium from some Edges of Mica Flakes
  53. Conifer seedling pathology
  54. Diffusion of organophosphorus insecticides in soils
  55. Uptake of phosphorus and other nutrients by maize in western Nigeria
  56. Molecular Structure of Herbicides and their Sorption by Soils
  57. A laboratory‐scale pulper for leafy plant material
  58. A laboratory-scale press for extracting juice from leaf pulp
  59. Mobilisation and fixation of iron and trace elements by aerobically decomposing plant matter.
  60. The effect of organic matter on the determination of iron (II) in soils and rocks
  61. The Park Grass plots at Rothamsted (1856-1949)
  62. Food resources: conventional and novel
  63. Genetics of symbiosis and nitrogen fixation in legumes
  64. The Viruses [Chapter 11]
  65. The production and use of leaf protein
  66. Sampling for aphids by traps and by crop inspection
  67. Growth and yield of six short varieties of spring wheat derived from Norin 10 and of two European varieties
  68. Health hazards from mouldy fodder
  69. Complementary ways of meeting the world’s protein need
  70. Experiments with CCC on wheat: effects of spacing, nitrogen and irrigation
  71. Nutrition experiments on forest nurseries
  72. Viruses, vectors and vegetation [Book Review]
  73. Algorithm AS 18: Evaluation of Marginal Means
  74. Algorithm AS 19: Analysis of Variance for a Factorial Table
  75. A survey of numerical methods useful in taxonomy - mites
  76. Algorithm AS 23: Calculation of Effects
  77. The basis of numerical methods of classification
  78. Further Results on the Effects of Phorate on Losses of Sweet Corn (Zea mays L.) Caused by Frit Fly (Oscinella frit L.)
  79. An Experiment to Assess Losses Caused by Frit-fly (Oscinella frit L) Shoot Attack and the Application of Phorate in a Crop of Sweet Corn (Zea mays L)
  80. Soluble and slow-release PK-fertilizers for seedlings and transplants of Picea sitchensis and Picea abies in two English nurseries
  81. Problem of insecticidal residues in agricultural soils
  82. Problems of soil classification
  83. Portable counter with keyboard and probes
  84. The plant nutrients in crops grown on Broadbalk
  85. The soils of Broadbalk : Plant nutrients in Broadbalk soils
  86. Preservation of leaf protein preparations by air drying
  87. The influence of agricultural practice on soil macro-arthropod populations
  88. Soil pollutants and soil animals
  89. Effects of gamma irradiation on populations of soil invertebrates
  90. Aerial photography in Soil and Land Survey
  91. The multiplication regions and interaction of acute and chronic bee-paralysis viruses in adult honey bees
  92. The signs of adult bee diseases
  93. The multiplication and spread of sacbrood virus of bees
  94. Algorithm AS 20: The efficient formation of a triangular array with restricted storage for data
  95. A fifty-channel digital recorder for thermocouple psychrometers
  96. Some pheromones controlling honeybee behaviour
  97. Nest-entrance marking with pheromones by honeybee-Apis mellifera L and by a wasp Vespula Vulgaris L
  98. Pheromones of the honey bee - The secretion of the Nassanoff gland of the worker
  99. Minimum spanning trees and single linkage cluster analysis
  100. Condensation of ketones with dimethyl dimethylmaleate. A synthesis of calythrone
  101. Structural requirements for pyrethrin-like activity
  102. Pyrethrin 2 and related esters obtained by reconstitution
  103. Nuclear magnetic resonance spectra of natural pyrethrins and related compounds
  104. Insecticidal activity of pyrethrins and related compounds. 2. Relative toxicity of esters from optical and geometrical isomers of chrysanthemic, pyrethric and related acids and optical isomers of cinerolone and allethrolone
  105. The description of data structures for statistical computing
  106. Relationships of yields of maize and cotton, and the response to phosphate fertilizer, with soil phosphate potentials in Tanzania
  107. The buffering capacity of potassium reserves in soils