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Screening for suitable chemical acaricides against two-spotted spider mites, Cheek for Tetranychus urticae, on greenhouse strawberries in China

文献类型： 外文期刊

作者： Wang, Zhiwei 1 ; Cang, Tao 1 ; Wu, Shenggan 1 ; Wang, Xinquan 1 ; Qi, Peipei 1 ; Wang, Xiangyun 1 ; Zhao, Xueping 1 ;

作者机构： 1.Zhejiang Acad Agr Sci, State Key Lab Breeding Base Zhejiang Sustainable, Hangzhou 310021, Zhejiang, Peoples R China; Zhejiang Acad Agr Sci, MOA Key Lab Pesticide Residue Detect, Hangzhou 310021, Zhejiang, Peoples R China; Zhejiang Acad Agr Sci, Zhejiang Prov Key Lab Detect Pesticide Residues &, Hangzhou 310021, Zhejiang, Peoples R China; Zhejiang Acad Agr Sci, Inst Qual & Stand Agroprod, Hangzhou 310021, Zhejiang, Peoples R China

关键词： Acaricides; Strawberry; Efficacy; Dissipation; Risk assessment; Honeybee

期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：6.291； 五年影响因子：6.393 ）

ISSN： 0147-6513

年卷期： 2018 年 163 卷

页码：

收录情况： SCI

摘要： Effective and safe acaricides based on scientific data are needed for that no chemical acaricides has been registered for the control of two-spotted spider mite in strawberry crops in China. To identify suitable acaricides, the efficacy, persistence, and toxicity of eight acaricides (hexythiazox, fenpyroximate, chlorfenapyr, propargite, etoxazole, bifenazate, spirodiclofen, and pyridaben) on greenhouse strawberries were tested. The eight acaricides were ranked, from highest average efficacy at the recommended dosage to lowest, as follows: etoxazole > bifenazate > fenpyroximate > propargite > spirodiclofen > pyridaben > hexythiazox > chlorfenapyr. The average recoveries of the eight acaricides at the spiking levels of 0.05 and 0.5 mg/L ranged from 72.4% to 108.1% (relative standard deviation, 1.3-8.8%). The concentrations of hexythiazox, fenpyroximate, etoxazole, bifenazate, spirodiclofen, and pyridaben at 5 days after application were lower than the maximum residue limits (MRLs) specified by China, the European Union (EU), the Codex Alimentarius Commission, and Japan, but those of chlorfenapyr and propargite residues were 8.8 and 1.9 times higher than the Mas in the EU. Only propargite posed a high chronic dietary risk to humans. Pyridaben and chlorfenapyr showed unacceptable ecotoxicology risks for honeybees (hazard quotient values of > 50). The recommended acaricides to control spider mites in greenhouse-grown strawberry crops are etoxazole, bifenazate, fenpyroximate, spirodiclofen, and hexythiazox based on the efficacy, persistence and toxicity.

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