Toxicity and Field Efficacy Test of Several Insecticides against Carsidara marginalis Walker

Toxicity and Field Efficacy Test of Several Insecticides against Carsidara marginalis Walker

Yang Zhiqiang; Lu Yanchun; Zhou Jing; Xu Dongying; He Wen; Peng Chong; Tan Dejin

【期刊名称】《植物病虫害研究：英文版》 【年(卷),期】2020(011)001

【摘要】[Objective]The paper was to study the prevention and control effect of different chemical insecticides on Carsidara marginalis Walker.[Method]The indoor toxicity and field efficacy of six insecticides against C.marginalis were determined by residual film method and field efficacy test.The toxicity and field efficacy were comparatively analyzed.[Result]The LC50 of 5?amectin EC,24%spirotetramat EC,10%lambdacyhalothrin EC,10%nitenpyram SL,25%pymetrozine WP and

20%imidacloprid

EC

against

C.marginalis

were

3.585,12.083,15.012,18.754,23.373 and 61.161 mg/L,respectively.The field efficacies against C.marginalis at 1 d post administration were 78.04%,80.05%,69.92%,82.27%,71.72%and 76.72%,respectively.The field efficacies against C.marginalis at 10 d post administration were 92.49%,82.41%,83.80%,88.24%,94.10%and

97.01%,respectively.[Conclusion]The agents with strong quick effect and insecticides with strong systematic conductivity should be mixed together,in order to achieve quick and continuous insecticidal effects. 【总页数】4页(P.33-35,40)