Deposition and dissipation of difenoconazole in pepper and soil and its reduced application to control pepper anthracnose
文献类型： 外文期刊
作者： Song, Jiajin 2 ; Zheng, Zhiruo 2 ; Fang, Hua 2 ; Li, Tongxin 2 ; Wu, Zishan 2 ; Qiu, Mengting 2 ; Shen, Hongjian 2 ; Mei, Jiajia 2 ; Xu, Lihui 1 ;
作者机构： 1.Shanghai Acad Agr Sci, Inst Ecoenvironm Protect, Shanghai 201403, Peoples R China
2.Zhejiang Univ, Coll Agr & Biotechnol, Inst Pesticide & Environm Toxicol, Hangzhou 310058, Peoples R China
3.Zhejiang Univ, Key Lab Mol Biol Crop Pathogens & Insects, Minist Agr, Hangzhou 310058, Peoples R China
4.Zhejiang Univ, Key Lab Biol Crop Pathogens & Insects Zhejiang Pro, Hangzhou 310058, Peoples R China
关键词： Difenoconazole; Initial deposition amount; Dissipation dynamic; Field control efficacy; Minimum effective dosage
期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：6.8； 五年影响因子：6.9 ）
ISSN： 0147-6513
年卷期： 2023 年 252 卷
页码：
收录情况： SCI
摘要： The initial deposition amount, dissipation dynamics, retention rate, and field control efficacy of difenoconazole in pepper-soil system were studied with different application dosages, planting regions and patterns. The initial deposition amount of difenoconazole under the same application dosage showed the following order: fruits < cultivated soils < lower stems < upper stems < lower leaves < upper leaves, open field < greenhouse, and Changjiang < Cixi < Hefei < Langfang, respectively, which increased with increasing application dosage. The dissipation rates in leaves, stems, fruits and cultivated soils exhibited an initially fast and then slow trend, while the retention rates displayed a tendency of first increasing and then stabilizing with increasing application dosages. After 7 d of difenoconazole application, the retention rates at five concentrations were 10.3%-39.1%, and the field efficacy mostly reached the minimum effective dose. These results suggested that difenoconazole could be reduced by 25% based on the minimum recommended dose meeting the requirements of field control efficacy for controlling pepper anthracnose.
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