1. Soils and Plant Nutrition Department
  2. Two Serologieally Unrelated Viruses Isolated from a Phialophora sp.
  3. Properties of Thirteen Viruses and Virus Variants Obtained from Eight Isolates of the Wheat Take-All Fungus, Gaeumannomyces graminis var. tritici.
  4. Chemical communication in honeybees
  5. Photosyntheis photorespiration and crop productivity
  6. Biological effectiveness of spinning disc electrostatic sprayers
  7. 2 Li, Na, K, Rb, Cs, Fr; Be, Mg, Ca, Sr, Ba, Ra
  8. Soil limitations to crop yields
  9. Taylor's power law for dependence of variance on mean in animal populations
  10. Aerial environment and crop growth
  11. Mg2+-Dependent, cation-stimulated inorganic pyrophosphatase associated with vacuoles isolated from storage roots of red beet (Beta vulgaris L.)
  12. Characterisation of a salt-stimulated ATPase activity associated with vacuoles isolated from storage roots of red beet (Beta vulgaris L.)
  13. Settling behaviour of cereal aphids and forecasting
  14. Loveland, P.J. 1981b. Heavy minerals in the Upper Albian/Lower Cenomanian
  15. Fungal parasites of some plant parasitic nematodes
  16. The gene-for-gene relationship and its significance for potato cyct nematodes and their Solanaceous Hosts
  17. Mycorrhiza and its significance in horticulture
  18. A comparison of autumn-born Friesian or Hereford cross Friesian calves finished out of yards at 18-21 months, or grass finished at two years [cattle]
  19. The effect of weeds and wild plants on the reinfestation of land by Ditylenchus dipsaci (stem and bulb nematode) and on the stability of its populations
  20. Role of wild plants and weeds in the ecology of plant parasitic nematodes
  21. Hatching of Globodera rostochiensis in response to potato root diffusate persisting in soil
  22. Biology and Behaviour of the Honeybee Apis Florea, and Possibilities for Beekeeping
  23. Statistics and computing in agricultural research
  24. Effects of root-infecting fungi on structure and function of cereal roots
  25. New or unusual records of plant diseases and pests
  26. Seventh Boyd Orr memorial lecture. Managing the mineral cycle
  27. Scanning electron microscope observations on the morphology of Tylenchorhynchus aduncus
  28. Quaternary history of the Hertfordshire area
  29. Comparison of the epidemiology of Metopolophium dirhodum and Sitobion avenae on winter wheat
  30. Settling behaviour of cereal aphids and forecasting outbreaks
  31. Fungitoxicity of hydroxy‐ and methoxy‐substituted phenyl‐ and naphthyl‐benzofurans, phenylbenzo[b]thiophenes and phenylindoles
  32. Algorithm AS 166: Generation of Polynomial Contrasts for Incomplete Factorial Designs with Quantitative Levels
  33. Algorithm AS 167: Screening Algorithm for Experimental Designs with Quantitative Levels
  34. Forecasting outbreaks of the English grain aphid, Sitobion avenae, with the aid of a simulation model
  35. Housefly resistance to pyrethroids in the vicinity of Harpenden
  36. Present trends and future needs in modelling for the management of insecticide resistance
  37. Towards integrated control of cereal aphids
  38. Water stress and crop growth 11
  39. Protoplasts in the in vivo life cycle of Erynia neoaphidis
  40. Influence of aerial pollution on crop growth and yield
  41. Effects of ground rock phosphate and elemental S on yield and P uptake of maize in western Kenya
  42. The deposition of sulphur and sodium in rainwater in the coastal region of Kenya
  43. Relationships between chemical structure and the behaviour and fate of pesticides
  44. Adsorption of pesticides by some Australian soils
  45. The first fifty years of the Journal of Animal Ecology with an Author index
  46. Canopy conductance of estate tea in Kenya
  47. Airborne Actinomycete spores as respiratory allergens
  48. chemicals for preventing moulding in damp hay
  49. The aerobiology of conidial fungi
  50. Problems in the use of sensitive serological methods for detecting viruses in vectors
  51. A comparison of the relative importance of between- and within-crop spread of ryegrass mosaic virus by eriophyid mites
  52. Agropyron mosaic virus in wheat
  53. Proceedings: 3rd Conference on Virus Diseases of Gramineae in Europe, Rothamsted, 28-30 May 1980
  54. Seed transmission and effects of ryegrass spherical virus
  55. Opportunities for manipulation of cereal productivity
  56. Barley yellow dwarf virus infectivity of cereal aphids trapped at two sites in Victoria
  57. Microbial biomass in soil: measurement and turnover
  58. Cation exchange in soils
  59. Precipitation
  60. The translocation of metals in soils
  61. The fate of plant and animal residues in soil
  62. Soil-borne pests and diseases
  63. Cropping systems in relation to soil-borne and trash-borne diseases of cereals
  64. Chairman's comments
  65. Chemicals in the control of cereal virus diseases
  66. Fungicides, fertilizers and sowing date
  67. Strategies for the control of cereal disease
  68. Expressing complex relationships in two dimensions
  69. Ordination between-and within-groups applied to soil classification
  70. Plotting the optimum positions of an array of cortical electrical phosphenes
  71. The effects of irrigation, nitrogen fertilizer and the control of pests and pathogens on spring-sown field beans (Vicia faba L.) and residual effects on two following winter wheat crops
  72. Petrography, origin and environment of deposition of the Shirdley Hill Sand of southwest Lancashire, England
  73. Analysis of asymmetric relationships in geological data
  74. Analysis of asymmetric relationships in geological data
  75. control of soil-inhabiting arthropods with Neoaplectana carpocaspsae
  76. Carabid beetles as predators of cereal aphids
  77. Biological effectiveness of spinning disc electrostatic sprayers
  78. Electrostatic spraying of crops with the APE 80
  79. The effect of temperature on photosynthetic and photorespiratory metabolism
  80. Experience of kriging from field measurements of soil properties : 3rd Colloque AISA Traitment informatique des Donnes de sol 14-17th Sept 1981
  81. Science in Crop Protection
  82. Nonprotein Amino Acids
  83. Would food and health-services benefit from a more intimate union
  84. Weathering of a soil glauconite in southern England
  85. Water-vapor calibration using salt hydrate transitions
  86. Water-use and tolerance of cyst-nematode attack in potatoes
  87. Water-movement in porous building-materials .3. A sorptivity test procedure for chemical injection damp proofing
  88. Virus-particles and double-stranded-rna in isolates of phialophora sp with lobed hyphopodia, phialophora-graminicola and gaeumannomyces-graminis var graminis
  89. Variation in 2 barley pathogens towards systemic fungicides
  90. The use of egg counts and suction trap samples to forecast the infestation of spring-sown field beans, vicia-faba, by the black bean aphid, aphis-fabae
  91. Use of c1q enzyme-linked immunosorbent-assay to detect plant-viruses and their serologically different strains
  92. Use of anthelmintics for cattle in England and Wales during 1978
  93. The use of anthelmintics for cattle in England and Wales during 1978
  94. Uptake and movement of chlormequat-C-14 chloride applied to leaves of barley and wheat
  95. Transcriptase activity associated with a type-2 double-stranded-rna mycovirus
  96. Theoretical and experimental relationships between soil adsorption, octanol-water partition-coefficients, water solubilities, bioconcentration factors, and the parachor
  97. Techniques for studying the infection of plants by vesicular-arbuscular mycorrhizal fungi under axenic conditions
  98. Techniques for preparation and examination of plant parasitic nematodes in the scanning electron-microscope
  99. Techniques for distributing non-fumigant nematicides in soil to control potato cyst-nematodes, globodera-rostochiensis and globodera-pallida
  100. Synthetic pheromones to attract honeybee (apis-mellifera) swarms
  101. Synthesis and X-ray crystal-structures of 3 isomeric macrobicyclic polyethers having similar melting-points and different complexing power for alkali-metal cations
  102. The synthesis and complexation of open-chain polyethers having various end groups
  103. Study of the behavior of several strains of conidiobolus-obscurus zygomycetes entomophthoraceae on the aphids acyrthosiphon-pisum and sitobion-avenae hom, aphididae
  104. Structure of the complex formed between ammonium picrate and 1,10-phenanthroline
  105. The structure of the 1,4,7,10,13,16-hexaoxacyclooctadecane (18-crown-6) bis(dimethyl sulfone) complex
  106. Structure of rel-([alpha]R),(1R,trans)-[alpha]-cyano-3-phenoxybenzyl 3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate, non-insectidal components of cypermethrin
  107. Structure of a hydrazido(2-) complex of tungsten(V): trichlorobis(dimethylphenylphosphine)[phenylhydrazido(2-)]tungsten(V)
  108. A strain of Arracacha Virus B infecting Oca (Oxalis tuberosa: Oxalidaceae) in the Peruvian Andes
  109. The specification of experimental-designs to ANOVA programs - comment
  110. Spatial dependence and classification of the soil along a transect in northeast Scotland
  111. Sowing date - notes and recommendations
  112. Some speculations on the nature of the natural defense-mechanism of plants against virus-infection
  113. Some observations on earthworm populations in grassland soils
  114. Solitary bees that inhabit walls
  115. Soil segment overlap in character space and its implications for soil classification
  116. A simple and reliable method of estimating root length
  117. Similarity of Ribulose-1,5-bisphosphate carboxylases of isogenic diploid and tetraploid ryegrass (Lolium perenne L.) cultivars
  118. Separation of non-filamentous microorganisms from soil by density gradient centrifugation in percoll
  119. Selective isolation and enumeration of actinomycetes using rifampicin
  120. Selection criteria for the construction of efficient diagnostic keys
  121. Scaling of infiltration behavior in dissimilar porous materials
  122. A satellite double-stranded-rna in a virus from gaeumannomyces-graminis
  123. Routine production of axenic vesicular-arbuscular mycorrhizas
  124. Ribulose-1,5-bisphosphate carboxylase-oxygenase - how does it work - reply
  125. A review of statistical ideas relevant to intercropping research
  126. Responses of myzus-persicae (sulzer) (hemiptera, aphididae) to plants treated with fatty-acids
  127. The response of tensiometers embedded in saturated soil peds of low hydraulic conductivity
  128. Requirements of magnesium fertilizer by sugar-beet
  129. The relative abundance of the hymenopterous parasites attacking metopolophium-dirhodum (walker) and sitobion-avenae (f) (hemiptera, aphididae) on cereals during 1973-79 in southern England
  130. The relationship between light-trap and suction-trap catches of chrysoperla-carnea (stephens) (neuroptera, chrysopidae), and the adjustment of light-trap catches to allow for variation in moonlight
  131. Recent work with critical-point dried soils - reply
  132. Rapid spread by mites of ryegrass mosaic-virus from old sward to seedling ryegrass and its prevention by aldicarb
  133. A rapid and accurate method of aligning a crystal on a weissenberg goniometer
  134. A quantitative method for extracting resting spores of 2 nematode parasitic fungi, nematophthora-gynophila and verticillium-chlamydosporium, from soil
  135. The pyrethrins and related-compounds .25. Synthesis and insecticidal activity of conformationally restrained compounds related to 3-phenoxybenzyl esters
  136. Purification and some properties of tephrosia-symptomless virus
  137. Protoplasts in the invivo life-cycle of erynia-neoaphidis
  138. Prospects for improving plant establishment
  139. Properties of a filamentous virus of the honey bee (Apis mellifera)
  140. Proline accumulation in a barley mutant resistant to trans-4-hydroxy-L-proline
  141. Problems in interpreting scanning electron-micrographs of plasmodiophora plasmodia
  142. Problems in countering resistance
  143. Preventing phosphorus losses during perchloric acid digestion of sodium bicarbonate soil extracts
  144. The prevalence of viruses of honey bees in Britain
  145. The presence of pathogenesis-related proteins in callus of xanthi-nc tobacco
  146. Preparation of green plant-material for liquid scintillation-counting
  147. Powdery mildew and its control
  148. Potassium retention and release in Rothamsted and Saxmundham soils
  149. Possible impact of cosmochemistry on terrestrial biology - historical introduction
  150. The polymorphism and structural homology of storage polypeptides (hordein) coded by the Hor-2 locus in barley (Hordeum vulgare L.)
  151. Plant-regeneration from shoot culture-derived protoplasts of tetraploid potato (solanum-tuberosum cv maris-bard)
  152. Plant-growth responses to vesicular-arbuscular mycorrhiza .12. Field inoculation responses of barley at 2 soil-p levels
  153. Phosphorus and carbon relationships in plants infected with vesicular-arbuscular mycorrhizal fungi
  154. Phosphate adsorption in allophanic soils
  155. Phenological and geographical relationships between catches of pea moth in sex-attractant traps
  156. Pest monitoring to aid insecticide use
  157. The pathogenesis-related proteins of tobacco - their induction by viruses in intact plants and their induction by chemicals in detached leaves
  158. Observations on relationships between infective juveniles of bovine lungworm, dictyocaulus-viviparus (nematoda, strongylida) and the fungi, pilobolus-kleinii and pilobolus-crystallinus (zygomycotina, zygomycetes)
  159. Observations on globodera-pallida and globodera-rostochiensis on early potatoes
  160. Novel 2-acycyclohexane-1,3-diones in the mandibular glands of lepidopteran larvae - kairomones of ephestia-kuehniella zeller
  161. Non-protein amino-acids of plants
  162. Nitrilase activity in clubroot diseased plants
  163. New weed hosts for the giant race of ditylenchus-dipsaci (kuhn) filipjev
  164. A new species of dysaphis borner from nepal (homoptera, aphidoidea)
  165. The nasonov pheromone of the honeybee apis-mellifera l (hymenoptera, apidae) .2. Bioassay of the components using foragers
  166. Nasonov pheromone of the honey bee, apis-mellifera l (hymenoptera, apidae) .3. Regulation of pheromone composition and production
  167. Movement of fluometuron, simazine, 36Cl− and 144Ce3+ in soil under field conditions: qualitative aspects
  168. Molecular-cloning and analysis of cdna sequences derived from polya+rna from barley endosperm - identification of b-hordein related clones
  169. Mode of action of hydroxypyrimidine fungicides
  170. The mode of action of ethionine foliar sprays against potato common scab (streptomyces-scabies)
  171. Microbiology of roots infected with the take-all fungus (gaeumannomyces-graminis var tritici) in phased sequences of winter-wheat
  172. Microbially bound phosphates in soils
  173. Methyl-substituted macrocyclic crown polyethers and their complexation
  174. Methods of producing perithecia of gaeumannomyces-graminis and their application to related fungi
  175. Methods for inoculating field crops with mycorrhizal fungi
  176. Maize endosperm proteins compared by sodium dodecyl-sulfate gel-electrophoresis and isoelectric-focusing
  177. The location of the enzymes of ammonia assimilation in root-nodules of phaseolus-vulgaris L.
  178. Localization and characterization of homoserine dehydrogenase isolated from barley and pea leaves
  179. Levels, distribution and chemical forms of trace-elements in food plants
  180. Laboratory application of preservatives to hay and the effects of irregular distribution on mold development
  181. The k-40 and bi-214 (from u-238) contents of Rothamsted soils determined by gamma spectrometry
  182. Invitro transcription of double-stranded-rna by virion-associated rna-polymerases of viruses from gaeumannomyces-graminis
  183. Interrelationship between nitrogen concentration in grain, grain-yield and added fertilizer nitrogen in wheat experiments of southeast England
  184. Interpretation of sperm development in nematodes
  185. The interaction between bactericidal chemicals and the wound-healing process of potato-tuber tissue
  186. The influence of soil treatments on the bacterial-degradation of diazinon and other organo-phosphorus insecticides
  187. Influence of plant interactions on vesicular-arbuscular mycorrhizal infections .2. Crop rotations and residual effects of non-host plants
  188. Infectivity of lesioned wheat root-tissue related to the presence of dehydrogenase enzymes in hyphae of gaeumannomyces-graminis var tritici (take-all) in the lesions
  189. The incidence of gaeumannomyces-graminis var tritici and phialophora-radicicola var graminicola on wheat grown after different cropping sequences (take-all)
  190. An improved small-scale unit for extracting leaf juice
  191. An improved open-topped chamber for pollution studies on crop growth
  192. An improved method for measuring soil respiration in the field
  193. Hydroxypyrimidine fungicides inhibit adenosine-deaminase in barley powdery mildew
  194. Host ranges of globodera species within solanum subgenus leptostemonum
  195. Hirschmanniella sp, an endo-parasitic nematode associated with miti-miti disease of taro corms in the Solomon-Islands
  196. Heterodera-mediterranea n-sp (nematoda, heteroderidae) on pistacia-lentiscus in southern italy
  197. A heavy metal-tolerant strain of a mycorrhizal fungus
  198. Hatching of potato cyst-nematodes (globodera-rostochiensis, globodera-pallida) in root exudates of solanum-vernei hybrids
  199. Hatching mechanisms of nematodes
  200. Growth on oat-seedling agar of isolates of gaeumannomyces-graminis and some phialophora species from cereal roots
  201. Growth of spring barley under drought - crop development, photosynthesis, dry-matter accumulation and nutrient content
  202. Glutamine-metabolism in higher-plants
  203. Genetic-control of ethirimol resistance in a natural-population of erysiphe-graminis f-sp-hordei
  204. Fungus diseases on potato seed tubers planted in England and Wales, 1963-76
  205. Fungal parasites - a weapon against cyst nematodes
  206. Formation of microbial biomass during the decomposition of C-14 labelled ryegrass in soil
  207. Finding nitrogen-fixation genes
  208. Field plans - why the biometrician finds them useful
  209. Field desorption mass-spectrometry of complexes of sodium and potassium with macrocyclic polyethers
  210. Fertilizing for a rotation
  211. Fatty-acids as substrates and inhibitors of fungi from propionic-acid treated hay
  212. Factors determining the release of nasonov pheromone by honeybees at the hive entrance
  213. Factors affecting the sequential acquisition by danish houseflies (musca-domestica l) of resistance to organo-phosphorus insecticides
  214. Facilities for modeling linear and non-linear bioassay relationships in mlp
  215. The extraction and separation of barley glutelins and their relationship to other endosperm proteins
  216. Evidence for gene-for-gene relationships between resistance gene-H1 from Solanum-tuberosum ssp andigena and a gene in Globodera-rostochiensis, and between H-2 from solanum-multidissectum and a gene in Globodera-pallida
  217. Evaluation of the various components of the nasonov pheromone used by clustering honeybees
  218. Estimating parameters in quantitative bioassay
  219. Enhancement of polygalacturonase activity by potassium phosphate in liquid culture of phialophora-radicicola var radicicola
  220. Effects on dry-weight and nitrogen-content of grains of semi-dwarf and tall varieties of winter-wheat caused by decreasing the number of grains per ear
  221. Effects of soil application of benomyl against take-all (gaeumannomyces-graminis) and footrot diseases of wheat
  222. Effects of plant-protection chemicals on vesicular-arbuscular mycorrhizas
  223. Effects of ethionine and flurecols, applied to leaves, on clubroot of cabbage
  224. The effects of drought on barley - soil and plant water relations
  225. Effects of dose and attractant on interactions between pheromone traps for the pea moth, cydia-nigricana
  226. Effects of decreasing the number of grains in ears of cvs hobbit and maris huntsman winter-wheat
  227. Effects of covering potato crops with clear polyethylene film on spread of potato virus-y
  228. An effective lure for use in pheromone traps for monitoring pea moth, cydia-nigricana (f)
  229. The effect on wheat-grain growth of the removal or aba treatment of glumes and lemmas
  230. The effect of perforated polyethylene sheeting on the alighting behavior of aphids (hemiptera, aphididae) and their infestation of potato crops
  231. The effect of minimum cultivation on the incidence of take-all down the root profile of winter-wheat
  232. The effect of introducing aphid-pathogenic entomophthoraceae into field populations of aphis-fabae
  233. Effect of host plant-selection and temperature on the structure of root-nodules of red-clover (trifolium-pratense l)
  234. Effect of green manures on yield and nitrogen requirement of sugar-beet
  235. Ecology of mycorrhizae and mycorrhizal fungi
  236. Ecology of conidiobolus-obscurus (entomophthora-obscura) in soil
  237. The dual polyclave - an aid to more efficient identification
  238. Distributions of final digits in data
  239. Development of virology .5. Portraits of viruses - tobacco necrosis virus and its satellite virus
  240. Development of the crop
  241. The development of protein bodies in the storage tissues of seeds - subcellular separations of homogenates of barley, maize, and wheat endosperms and of pea cotyledons
  242. The determination of imazalil on potatoes and its use in controlling potato storage diseases
  243. Detection of starvation as the cause of death in honeybees, from thoracic glucose-levels
  244. Detection of ridge and furrow pattern by spectral-analysis of crop yield
  245. The design of optimal sampling schemes for local estimation and mapping of regionalized variables .2. Program and examples
  246. The design of optimal sampling schemes for local estimation and mapping of regionalized variables .1. Theory and method
  247. Deposition of particles liberated in gusts of wind
  248. Denitrification in a very acid tropical soil
  249. Dehydrochlorination of some organochlorine pesticides in freeze-dried egg and egg fat during storage
  250. Decreased severity of potato common scab after foliar sprays of 3,5-dichlorophenoxyacetic acid, a possible anti-pathogenic agent
  251. Darwin,charles and earthworms
  252. Dark respiration of several varieties of winter-wheat given different amounts of nitrogen-fertilizer
  253. The crystal-structures of 1,5,12,16,23,26,29,32,35-nonaoxa 133,14 - 5.5 orthocyclophane and its complex with rubidium picrate
  254. Crystal-structure studies of hydrazido(2-)quinolin-8-olato-complexes of molybdenum and tungsten
  255. Crystal-structure of 2 bridged macrobicyclic polyethers, 1,5,12,16,23,26,29-heptaoxa 73,14 5.5 orthocyclophane and 1,5,12,16,23,26,29,32-octaoxa 103,14 5.5 orthocyclophane
  256. The crystal-structure of 1,4,7,14,17,20,28,35-octaoxa 23,29.218,34 7.7 -orthocyclophane and its multihydrated complex with kcl
  257. Cross-linking of the Subunits of Potato Virus X with Di-imidates
  258. Crop protection chemicals - directions of future-development - introductory-remarks
  259. The correction of insitu tensiometer readings for overburden pressures in swelling soils
  260. Conventional and novel approaches to the improvement of the nutritional quality of cereal and legume seeds
  261. Control of potato diseases during growth and in store by fungicide seed treatment
  262. Contamination of vegetation with synthetic sex-attractant released from traps for the pea moth, cydia-nigricana
  263. Conidiobolus-obscurus in arable soil - a method for extracting and counting azygospores
  264. Complex-formation between guanidinium nitrate and 1,4,7,10,13,16-hexaoxacyclo-octadecane (18-crown-6) - crystal-structure of the hydrogen-bonded 2 - 1 complex
  265. The compatibility of the nitrification inhibitor dicyandiamide with injected anhydrous ammonia
  266. Compartmental modeling of photo-respiration and carbon metabolism of water stressed leaves
  267. A comparison of the organic matter, biomass, adenosine triphosphate and mineralizable nitrogen contents of ploughed and direct-drilled soils
  268. The classification, identification and nomenclature of agrobacteria - incorporating revised descriptions for each of agrobacterium-tumefaciens (smith and townsend) conn 1942, agrobacterium-rhizogenes (riker et al) conn 1942, and agrobacterium-rubi (hildebrand) starr and weiss 1943
  269. Chemicals for preventing molding in damp hay
  270. Carbonyl-complexes of niobium and tantalum and evidence of a niobium dinitrogen complex - the structure of carbonyldichlorocyclopentadienylbis(dimethylphenylphosphine)tantalum
  271. Calcium inhibitors and the hatching of globodera-rostochiensis
  272. Breeding of nodulated red-clover (trifolium-pratense) for high-yield
  273. Badgers guilty
  274. Badger debate
  275. Bacterium-like organelles in the vesicular-arbuscular mycorrhizal fungus glomus-caledonius
  276. Attraction of honey bees to flowering plants by using synthetic nasonov pheromone
  277. Attractant lures for males of the pea moth,Cydia nigricana (F.) Containing (E)-10-dodecen-1-yl acetate and (E,E)-8,10-dodecadien-1-yl acetate
  278. The attachment of honeybee comb to sloping hive sides and side-bars of frames
  279. Analysis of field-weathered lures containing (E)-10-dodecen-1-yl acetate, a sex attractant for the pea moth,Cydia nigricana (F.)
  280. Agricultural use of lime
  281. Aerodynamic properties of field bean and potato crops
  282. 2 serologically unrelated viruses isolated from a phialophora sp
  283. Variation in chiasma distribution in inbred perennial ryegrass
  284. Optimal interpolation and isarithmic mapping of soil properties .4. Sampling strategy
  285. The development of forecasting systems for cereal aphid outbreaks in Europe
  286. The 'natural enemy ravine' in cereal aphid population dynamics: a consequence of predator activity or aphid biology?
  287. Effects of common scab Streptomyces scabies on potatoes
  288. The determination of ionic diffusion coefficients in field soils. I. Diffusion coefficients in sieved soils in relation water content and bulk density.
  289. Simulations of population models for cyst-nematodes: applications in agriculture.
  290. Phoridae (Diptera) from English pasture soils.