1969

  1. The effect of farmyard manure on the fertilizer requirement of sugar beet
  2. The effects of magnesium fertilizers on yield and chemical composition of sugar beet
  3. Trials on the control of Docking disorder in sugar beet; seed and row treatment with nematicides
  4. Reduction of acetylene by nodules of Trifolium subterraneum as affected by root temperature, Rhizobium strain and host cultivar
  5. Peat Culture of Rhizobium trifolii: an Examination by Electron Microscopy
  6. Growth of Trifolium subterraneum L. Selected for Sparse and Abundant Nodulation as Affected by Root Temperature and Rhizobium Strain
  7. Entomophthora species attacking aphids in England, 1962–66
  8. Entomophthora species attacking aphids in England, 1962–66
  9. 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
  10. Monarch butterflies coinciding with American passerines in Britain and Ireland in 1968
  11. Interference by cyanide with the measurements of papain hydrolysis
  12. Effect of storage and lipid extraction on the properties of leaf protein
  13. Interactions of Azotobacter with rhizosphere and root-surface microflora
  14. Zeolites of the elinoptilolite–heulandite type in sediments of South-East England
  15. Thin windows for flow proportional counters in x-ray fluorescence spectrometers
  16. Partial silicification of chalk fossils from the Chilterns
  17. The diminution of sulphur contamination of powder specimens in X-ray fluorescence analysis
  18. The determination of sulphur in soils by X-ray fluorescence analysis
  19. Delayed Exchange of Potassium from some Edges of Mica Flakes
  20. Conifer seedling pathology
  21. Diffusion of organophosphorus insecticides in soils
  22. Uptake of phosphorus and other nutrients by maize in western Nigeria
  23. Molecular Structure of Herbicides and their Sorption by Soils
  24. A laboratory‐scale pulper for leafy plant material
  25. A laboratory-scale press for extracting juice from leaf pulp
  26. Mobilisation and fixation of iron and trace elements by aerobically decomposing plant matter.
  27. The effect of organic matter on the determination of iron (II) in soils and rocks
  28. The Park Grass plots at Rothamsted (1856-1949)
  29. Food resources: conventional and novel
  30. Genetics of symbiosis and nitrogen fixation in legumes
  31. The Viruses [Chapter 11]
  32. The production and use of leaf protein
  33. Sampling for aphids by traps and by crop inspection
  34. Growth and yield of six short varieties of spring wheat derived from Norin 10 and of two European varieties
  35. Health hazards from mouldy fodder
  36. Complementary ways of meeting the world’s protein need
  37. Experiments with CCC on wheat: effects of spacing, nitrogen and irrigation
  38. Nutrition experiments on forest nurseries
  39. Viruses, vectors and vegetation [Book Review]
  40. Algorithm AS 18: Evaluation of Marginal Means
  41. Algorithm AS 19: Analysis of Variance for a Factorial Table
  42. A survey of numerical methods useful in taxonomy - mites
  43. Algorithm AS 23: Calculation of Effects
  44. The basis of numerical methods of classification
  45. Further Results on the Effects of Phorate on Losses of Sweet Corn (Zea mays L.) Caused by Frit Fly (Oscinella frit L.)
  46. 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)
  47. Soluble and slow-release PK-fertilizers for seedlings and transplants of Picea sitchensis and Picea abies in two English nurseries
  48. Problem of insecticidal residues in agricultural soils
  49. Problems of soil classification
  50. Portable counter with keyboard and probes
  51. The plant nutrients in crops grown on Broadbalk
  52. The soils of Broadbalk : Plant nutrients in Broadbalk soils
  53. Preservation of leaf protein preparations by air drying
  54. The influence of agricultural practice on soil macro-arthropod populations
  55. Soil pollutants and soil animals
  56. Effects of gamma irradiation on populations of soil invertebrates
  57. Aerial photography in Soil and Land Survey
  58. The multiplication regions and interaction of acute and chronic bee-paralysis viruses in adult honey bees
  59. The signs of adult bee diseases
  60. The multiplication and spread of sacbrood virus of bees
  61. Algorithm AS 20: The efficient formation of a triangular array with restricted storage for data
  62. A fifty-channel digital recorder for thermocouple psychrometers
  63. Some pheromones controlling honeybee behaviour
  64. Nest-entrance marking with pheromones by honeybee-Apis mellifera L and by a wasp Vespula Vulgaris L
  65. Pheromones of the honey bee - The secretion of the Nassanoff gland of the worker
  66. Minimum spanning trees and single linkage cluster analysis
  67. Condensation of ketones with dimethyl dimethylmaleate. A synthesis of calythrone
  68. Structural requirements for pyrethrin-like activity
  69. Pyrethrin 2 and related esters obtained by reconstitution
  70. Nuclear magnetic resonance spectra of natural pyrethrins and related compounds
  71. 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
  72. The description of data structures for statistical computing
  73. Relationships of yields of maize and cotton, and the response to phosphate fertilizer, with soil phosphate potentials in Tanzania
  74. The buffering capacity of potassium reserves in soils