Toxicities and Field Control Efficacy of Six Pesticides to the Mustard Aphid Lipaphis erysimi Kaltenbach(Hemiptera: Aphididae)
[Amis] The toxicities and field control efficacy of six insecticides to mustard aphid Lipaphis erysimi were studied. [Results] The results show that the mustard aphid has developed varied resistant level to different pesticides. Among the tested pesticides, chlorpyrifos has the highest toxicity with a LC50 of 0.1215 mg/L, then is the abamectin, with a LC50of 0.7795 mg/L. The beta-cypermethrin has the lowest toxicity with a LC50of 996.8046 mg/L. The field experiments show that the six pesticides tested, i.e. imidacloprid, abamectin, acetamiprid, emamectin benzoate, chlorpyrifos and beta-cypermethrin, all have high control efficacy to the mustard aphid with at least 98% control efficacy in 3 days and 100% control efficacy in 14 days. [Conclusions] Compared with the green peach aphid Myzus persicae, mustard aphid presently has very low resistant level to the six pesticides tested in this study in field.
NETL
NSTL
万方数据
维普
