Environmental Behaviors of Procymidone in Different Types of Chinese Soil

Shuguang Zhang, Lianshan Li, Ge Meng, Xu Zhang, Lina Hou, Xiude Hua and Minghua Wang
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Shuguang Zhang: Jiangsu Key Laboratory of Pesticide, Nanjing Agricultural University, Nanjing 210095, China
Lianshan Li: Jiangsu Key Laboratory of Pesticide, Nanjing Agricultural University, Nanjing 210095, China
Ge Meng: Jiangsu Key Laboratory of Pesticide, Nanjing Agricultural University, Nanjing 210095, China
Xu Zhang: Jiangsu Key Laboratory of Pesticide, Nanjing Agricultural University, Nanjing 210095, China
Lina Hou: Jiangsu Key Laboratory of Pesticide, Nanjing Agricultural University, Nanjing 210095, China
Xiude Hua: Jiangsu Key Laboratory of Pesticide, Nanjing Agricultural University, Nanjing 210095, China
Minghua Wang: Jiangsu Key Laboratory of Pesticide, Nanjing Agricultural University, Nanjing 210095, China

Sustainability, 2021, vol. 13, issue 12, 1-12

Abstract: Procymidone is a widely used fungicide in the prevention and treatment of fungal diseases on many crops in China. Part of the procymidone will enter the soil during the application process. Procymidone may exhibit environmental behavior diversity in different soils. Therefore, it is extremely important to clarify the environmental behavior of procymidone in soil for its environmental safety evaluation. Here, the degradation, adsorption, and mobility behaviors of procymidone in four typical types of Chinese soil were investigated for the first time. The half-lives of procymidone in the soils ranged from 14.3 d to 24.1 d. The degradation rates of procymidone in the soils were promoted by organic matter content, moisture content, and microorganisms. Furthermore, the degradation of procymidone on the soil surface was promoted by light. The desorption rates of procymidone in laterite soil, yellow brown soil, black soil, and chestnut soil were 27.52 ± 0.85%, 16.22 ± 0.78%, 13.67 ± 1.29%, and 7.62 ± 0.06%, respectively, which were contrary to the adsorption ability. The mobility order of procymidone in the soils was: laterite soil > yellow brown soil > black soil > chestnut soil, with the R f values of 0.28, 0.22, 0.18, and 0.16, respectively. Three degradation products of procymidone were identified by liquid chromatography coupled with quadrupole/time-of-flight mass spectrometry, and the degradation pathway of procymidone in the soil was speculated. The results will provide a theoretical basis for the removal of procymidone in the soil environment.

Keywords: procymidone; environmental behavior; soil degradation; migration and leaching; degradation products (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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