Deposition distribution, metabolism characteristics, and reduced application dose of difenoconazole in the open field and greenhouse pepper ecosystem

文献类型： 外文期刊

第一作者： Chen, Shiyu

作者： Chen, Shiyu;Liu, Yalei;Wang, Xiuguo;Chen, Shiyu;Zhang, Houpu;Zhang, Qianke;Song, Jiajin;Zhang, Zihan;Deng, Yanfei;Fang, Hua;Fang, Hua;Fang, Hua;Cai, Lin;Cai, Lin

作者机构：

关键词： Difenoconazole; Pepper anthracnose; Deposition; Metabolism; Field efficacy

期刊名称：AGRICULTURE ECOSYSTEMS & ENVIRONMENT （ 影响因子：4.241； 五年影响因子：4.825 ）

ISSN： 0167-8809

年卷期： 2021 年 313 卷

页码：

收录情况： SCI

摘要： The deposition, dissipation, and metabolism of difenoconazole as well as reduced application dose were studied in the open field and greenhouse pepper system. The deposition amount of difenoconazole gradually increased with the increasing dosages, which followed an order with upper leaf > lower leaf > upper stem > lower stem > cultivated soil > fruit. The dissipation half-lives of difenoconazole in different parts of pepper plant and cultivated soil were higher in the greenhouse than those in the open field. Difenoconazole was transformed to metabolite I (C16H13Cl2N3O2) in pepper plant, but metabolite II (C13H14ClN3O3) in cultivated soil. Additionally, the field control efficacy of difenoconazole at the 0.75-fold minimum recommended dosage could meet the basic control requirement after the first application for 7 d. The results revealed deposition distribution and metabolism characteristics of difenoconazole and the application dose may be effectively decreased in the open field and greenhouse pepper-planted ecosystem.

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