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Environmental behavior and influencing factors of glyphosate in peach orchard ecosystem.
Qiao, Chengkui; Wang, Caixia; Pang, Rongli; Tian, Fajun; Han, Lijun; Guo, Linlin; Luo, Jing; Li, Jun; Pang, Tao; Xie, Hanzhong; Fang, Jinbao.
Afiliación
  • Qiao C; Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou, 450009, China.
  • Wang C; Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou, 450009, China.
  • Pang R; Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou, 450009, China.
  • Tian F; Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou, 450009, China.
  • Han L; College of Science, China Agricultural University, Beijing, 100193, China.
  • Guo L; Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou, 450009, China.
  • Luo J; Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou, 450009, China.
  • Li J; Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou, 450009, China.
  • Pang T; Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou, 450009, China.
  • Xie H; Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou, 450009, China. Electronic address: xiehanzhong@caas.cn.
  • Fang J; Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou, 450009, China. Electronic address: fangjinbao@caas.cn.
Ecotoxicol Environ Saf ; 206: 111209, 2020 Dec 15.
Article en En | MEDLINE | ID: mdl-32891912
In this paper, several experiments were carried out to study the environmental behavior and influencing factors of glyphosate (PMG) in peach orchard ecosystem. The results of field experiments showed that PMG and its metabolite aminomethylphosphonic acid (AMPA) were detected in peach tree leaves and peach tree fruits, although PMG was only sprayed on the soil. The residues of PMG and AMPA in peach tree leaves were ~0.1 mg/kg and ~0.5 mg/kg and in peach tree fruits were ~0.01 mg/kg and 0.07-0.11 mg/kg, respectively. By conducting a series of laboratory simulation experiments, the environmental factors affecting the degradation of PMG were screened and evaluated. The results showed that PMG metabolized much faster in loess soil than red soil and black soil (with the DT50 of 11.6 days, 62.4 days, and 34.1 days, respectively). By analyzing the basic properties of the soil, we investigated the effects of pH, moisture content, organic matter (exogenous biochar) and ambient temperature using orthogonal experiments, and the results were further confirmed by microbial experiment. The results showed that alkaline conditions (pH = 7.8/9), high water content (25%) and microorganisms could promote the degradation of PMG. Sterile soil environment had a negative impact on the metabolic behavior of PMG to AMPA.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes del Suelo / Monitoreo del Ambiente / Organofosfonatos / Prunus persica / Glicina / Herbicidas Tipo de estudio: Prognostic_studies País/Región como asunto: Asia Idioma: En Revista: Ecotoxicol Environ Saf Año: 2020 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes del Suelo / Monitoreo del Ambiente / Organofosfonatos / Prunus persica / Glicina / Herbicidas Tipo de estudio: Prognostic_studies País/Región como asunto: Asia Idioma: En Revista: Ecotoxicol Environ Saf Año: 2020 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos