40%万灵将ST对桑园鳞翅目害虫防效试验

The Test of 40 Percent Methomyl on the Control Effect of Mulberry Lepidoptera Pests

通过2007年秋季对40%万灵将ST的防效试验,随着使用浓度降低,对各类鳞翅目桑虫平均校正防效也随之下降,万灵将1000倍与对照农药灭多威2000倍平均校正防效相仿。在生产上防治桑园鳞翅目害虫,建议使用浓度1000倍,并掌握在害虫低龄期防治,安全用叶间隔期10～12d,适宜在养蚕前防治,与其它农药交替使用。

The test of 40 percent methomyl on the control effect of mulberry pests was conducted in the autumn of 2007, with the use of lower concentrations, the average correction effect to various types of Lepidoptera insects also declined. The same average correction effect was found between 1000 time methomyl and 2000 time CK pesticide Granville. It is recommend that the use of concentration 1000 times to control mulberry Lepidoptera pests in the production,, and held in the control during younger age of pests, the safe interval was 10 - 12 d. and it is suitable to use the pesticide before silkworm rearing, and to use other pesticides interchangeably.