Populations of aphids, whiteflies and associated predators and parasites on different vegetables cultivated in plastic greenhouses

被引:0
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作者
F. N. Zaki
M. F. El-Shaaraway
N. A. Farag
机构
[1] National Research Centre,Plant Protection Department
[2] Ain Shams University,Entomology Department, Faculty of Agriculture
关键词
Control Program; Tomato Plant; Chemical Control; Pest Population; Aphid Population;
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摘要
During 1996 and 1997, populations of aphids and whiteflies and their parasites were studied in plastic greenhouses under a chemical control program and in those free of pesticides. In the greenhouses free of pesticides, the parasite A. colemani destroyed 14.7 % of the aphids. B. tabaci had no effect on the cucumbers during the spring cultivation. However, it attacked the autumn cultivation. The parasite E. mundus killed 30 % of these nymphs.
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页码:128 / 131
页数:3
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