Bioactivity of some formulations of neem seed extracts against the whitefly Bemisia tabaci (Genn)

被引:1
|
作者
Dimetry, NZ
Gomaa, AA
Salem, AA
AbdElMoniem, ASH
机构
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D O I
10.1007/BF01904716
中图分类号
Q96 [昆虫学];
学科分类号
摘要
The bioactivity of different formulations of neem seed extracts against the whitefly Bemisia tabaci (Genn.) was assayed in semifield trials during 1992. Tomato plants variety UC-97 were cultivated in pots and left to natural infestation with whitefly in an open field and sprayed with various concentrations of each extract. The high concentrations of all the extracts tested exhibited obvious activity. Also, the different treatments reduced the population density of the adult whiteflies compared with the control. The percentage reduction in the population reached its maximum level one hour after treatment with any tested extract.
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页码:140 / 141
页数:2
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