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

更新时间:2023-05-28

【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% abamectin 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.

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