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In further investigations at Rothamsted [cf. preceding abstract], parasitism, overcrowding (two or more larvae in the same shoot), disease and predati...
Read moreThe presence of weeds within the crop provided a habitat which was more suitable for some of the arthropod predators of P. rapae. Harpalus rufipes was...
Read moreA biological interpretation was made of spatial distributions of the aleyrodid Trialeurodes vaporariorum reared on Phaseolus vulgaris from various agg...
Read moreThe following is based largely on the author's summary. During investigations in Britain in 1968 on the effect of weed control on the incidence of Pie...
Read moreThe results of experiments conducted during 1968 showed that the presence of weed within the crop provides a suitable habitat for some of the ground-l...
Read moreBecause cyst-nematode populations are relatively static, immigration and emigration are negligible and population fluctuations under different crops c...
Read moreCommunity science is an increasingly integral part of biodiversity research and monitoring, often achieving broad spatial and temporal coverage but lo...
Read moreAdults of Altica (Haltica) carduorum Guer. from France were released in 1969 and 1970 on Cirsium arvense (creeping thistle) at Silwood Park, Berkshire...
Read moreA quantitative approach to estimating the effects of potential closed areas on fish spawning biomass and yields is presented. The focus for evaluation...
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