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2003•Nongyaoxue xuebaoRequires access

Study on the Toxicity and the Effectiveness of Chlorfenapyr to-Spodoptera exigua

Xu Xiao

Open publisher page 2 citations

Abstract

The result of the test in laboratory showed that the control rate of hatching to Spodoptera exigua (Hubner) was 43.11% with 20 mg/L chlorfenapyr EC. The toxicity of chlorfenapyr to S.exigua deduced with the increase of instar. Larva in 1～2 instar was the most sensitive. In pot test,the mortality was 91.43%～100% and residual activity was over 15 days at concentration of 20 mg/L.The result of trial in field indicated that the control effects of 5% chlorfenapyr EC to S. exigua at 1 200 mL/hm2 was 95% and the high effectiveness was maintained for 20 days.

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What this paper is about

The result of the test in laboratory showed that the control rate of hatching to Spodoptera exigua (Hubner) was 43.11% with 20 mg/L chlorfenapyr EC. The toxicity of chlorfenapyr to S.exigua deduced with the increase of instar. Larva in 1～2 instar was the most sensitive. In pot test,the mortality was 91.43%～100% and residual activity was over 15 days at concentration of 20 mg/L.The result of trial in field indicated that the control effects of 5% chlorfenapyr EC to S. exigua at 1 200 mL/hm2 was 95% and the high effectiveness was maintained for 20 days.

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Available abstract

The result of the test in laboratory showed that the control rate of hatching to Spodoptera exigua (Hubner) was 43.11% with 20 mg/L chlorfenapyr EC. The toxicity of chlorfenapyr to S.exigua deduced with the increase of instar. Larva in 1～2 instar was the most sensitive. In pot test,the mortality was 91.43%～100% and residual activity was over 15 days at concentration of 20 mg/L.The result of trial in field indicated that the control effects of 5% chlorfenapyr EC to S. exigua at 1 200 mL/hm2 was 95% and the high effectiveness was maintained for 20 days.

Key concepts: Chlorfenapyr, Exigua, Spodoptera, Instar, Hatching, Larva, Toxicity, Biology

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Study on the Toxicity and the Effectiveness of Chlorfenapyr to-Spodoptera exigua — Research Paper | ScholarLens