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The following is virtually the authors' summary. An account is given of a modified Robinson-type light-trap [cf. RAE A 43 169] for segregating samples...
Read moreTen species of Umbelliferae were examined with regard to the time of year at which seedlings emerged and the survival of seeds in cultivated soil. The...
Read moreAchenes of 7 species of Carduus, Cirsium and Onopordum were collected in August-September and mixed with the top 2.5 or 7.5 cm of soil which was then ...
Read moreThe demography of the annual grass weed A. sterilis subsp. ludoviciana was studied during 3 consecutive years on populations growing in winter wheat c...
Read moreThe brown locust Locustana pardalina is a major agricultural pest in southern Africa, with populations periodically reaching plague proportions. Manag...
Read more1. The infestation of sheep with blowfly larvae (sheep strike) is a significant animal welfare and economic problem in many regions of the world. Impr...
Read moreThe decline of seeds of a natural population of arable weeds under a grass sward was monitored by germination in the field. Plots of 0.9 m2 were dug o...
Read moreThe effects of different cultivation regimes on arable weed floras were investigated at 5 sites over several yr. At 3 sites arable crops were grown in...
Read moreBlowfly infestation of sun-drying fish is a major economic problem in many developing countries of Asia, Africa and the Pacific. To consider the ecolo...
Read moreBluetongue virus (BTV), a pathogen of ruminants transmitted by Culicoides midges, has emerged dramatically across Europe since 1998. Surveillance of C...
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