The efficacy tests of eight kinds of pesticides for controlling Cyamophila willieti.
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Key Words：Cyamophila willieti，the pesticide toxicity，LC50，efficacy test
Abstract：Eight kinds of pesticides were tested for controlling Cyamophila willieti Wu, one of the main pests of Chinese scholartrees, under laboratory and field conditions. The result showed that the control effect of 2% abamectin EC 6 000, and 1% matrine SL 2 000 was above 98%. These two pesticides were suitable for widespread use in promoting protection of environment and natural enemies of insects.