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Samples of Auchenorrhyncha were collected from fertilized plots in southern England between April 1978 and November 1979. Twenty-nine species were rec...
Read moreIn laboratory experiments, oviposition by females of Oscinella frit at high population densities was negligible on single-leaved seedlings of ryegrass...
Read moreIn investigations in New Zealand, percentage estimates of the total mortality of Pieris rapae (L.) due to ground-living arthropod predators obtained b...
Read moreAn analysis of predation of cereal aphids (Sitobion avenae and Metopolophium dirhodum) by larvae of Episyrphus balteatus is described. Field data on t...
Read moreIn the summer of 1973-74, about 1.8 million adults of the parasite Aphaereta aotea Hughes & Woolcock were released at six sites in New South Wales...
Read moreThe seasonal changes in populations of Toxoptera aurantii (Boy.) on the flush leaves (new leaves on the shoots) and chupons (vegetative shoots arising...
Read moreBoth the number of rice hills (clumps of tillering stalks from planted seedlings) and the density of vectors were divided into 3 categories: healthy, ...
Read moreA key-factor analysis is presented using data on Delia coarctata (Fall.) populations collected over 12 years from Stackyard field, Rothamsted. The ana...
Read moreThe following is based largely on the author's summary. The amount of damage caused by locusts and grasshoppers is a function of a number of complex v...
Read moreDispersal of Cryptococcus fagisuga Ldgr. in a beech forest in southern England was studied using suction traps and sticky traps. First instar larvae a...
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