Insecticidal Activity and Field Efficacy of Novel Insecticide Cyhalodiamide against Different Lepido

• 作 者: Xing Jiahua Zhu Bingchun Yuan Jing Yu Jiping Dong Dezhen Zhou Dongying Hu Dongsong Chen Jie
• 机 构: Zhejiang Research Institute of Chemical Industry,Ltd.,
• 出 处: Plant Diseases and Pests
• 发表日期: 2014年04期
• 关键词: litura Lepidoptera spraying insecticidal Spodoptera Prodenia dosage Plutella Pie

[Objective]The paper was to study the insecticidal activity and field efficacy of cyhalodiamide,a novel insecticide developed by Zhejiang Research Institute of Chemical Industry,Ltd. [Method]Toxicity of cyhalodiamide against Plutella xylostella,Spodoptera exigua,Prodenia litura and Chilo suppressalis were tested in the laboratory by leaf-dipping method,and the field efficacy of cyhalodiamide against P. xylostella,S. exigua,P. litura,Pieris rapae,C. suppressalis and Cnaphalocrocis medinalis was evaluated. [Result]The LC50 values of cyhalodiamide against P. xylostella,S. exigua,P. litura and C. suppressalis were 0. 046,0. 072,0. 071 and 1. 95 mg /L,respectively,almost equivalent to that of flubendiamide and chlorantraniliprole. The control efficacy of 20% Z4042 SC(30 g /hm2)against P. xylostella,S. exigua,P. litura and P. rapae was 90. 1%- 96. 3% after spraying for 7 d,and its control efficacy against C. suppressalis and C. medinalis was 82. 9%- 90. 5% after spraying for 15 d. No crop injury was observed at the test dosage. [Conclusion] The study provided reference for field control against Lepidoptera pests.

[Objective] The paper was to study the insecticidal activity and field efficacy of cyhalodiamide, a novel insecticide developed by Zhejiang Research Institute of Chemical Industry, Ltd. [Method] Toxicity of cyhalodiamide against Plutella xylostella, Spodoptera exigua, Prodenia litura and Chilo suppressalis were tested in the laboratory by leaf-dipping method, and the field efficacy of cyhalodiamide against P. xylostella, S. exigua, P. litura, Pieris rapae, C. suppressalis and Cnaphalocrocis medinalis was evaluated. [Result] The LC50 values ​​of cyhalodiamide against P. xylostella, S. exigua, P. litura and C. suppressalis were 0. 046,0. 072,0. 071 and 1. 95 mg / L, respectively, almost equivalent to that of flubendiamide and chlorantraniliprole. The control efficacy of 20% Z4042 SC (30 g / hm2) against P. xylostella, S. exigua, P. litura and P. rapae was 90. 1% - 96.3% after spraying for 7 d, and its control efficacy against C. suppressalis and C. medinalis was 82. 9% - 90. 5% after spraying for 15 d. No crop in jury was observed at the test dosage. [Conclusion] The study provided reference for field control against Lepidoptera pests.