Preprints
https://doi.org/10.5194/soil-2021-125
https://doi.org/10.5194/soil-2021-125
 
24 Nov 2021
24 Nov 2021
Status: this preprint was under review for the journal SOIL. A revision for further review has not been submitted.

Migration behavior of benzobicyclon hydrolysate and associated influencing factors in different agricultural soils

Lang Liu1, Lei Rao2, Wenwen Zhou3, Limei Tang2, and Baotong Li1 Lang Liu et al.
  • 1College of Land Resources and Environment, Jiangxi Agricultural University, Nanchang 330045, China
  • 2College of Agricultural Sciences, Jiangxi Agricultural University, Nanchang 330045, China
  • 3College of Food Sciences, Jiangxi Agricultural University, Nanchang 330045, China

Abstract. Benzobicyclon is a triketone pro-herbicide that needs to be hydrolyzed to form an active compound benzobicyclon hydrolysate (BH). This study aimed to investigate the migration behavior of BH in different types of agricultural soil and the associated influencing factors. Soil thin-layer chromatography and column leaching tests were used to study the migration behavior of BH in these soils. Based on the mobility retention factor (Rf = 0.34–0.90), the mobility of BH in thin soil layers was ranked in the order Lixisols > Anthrosols > Ferralsols > Phaeozems. The Rf value of BH was linearly positively correlated with soil sand content and pH, and negatively correlated with other physical and chemical properties of soil. BH was difficult to leach in Phaeozems, less difficult to leach in Ferralsols, and easy to leach in Anthrosols and Lixisols. Increasing the BH dosage and rainfall amount or adding humic acid and anionic (dodecyl benzene sulfonic acid) or nonionic (Tween-80) surfactant blocked BH migration in soil columns. In contrast, increasing the leaching solution pH and adding cationic surfactant (cetyl trimethyl ammonium bromide) promoted BH migration in soil columns.BH application has a low risk of groundwater pollution in Phaeozems and Ferralsols, but poses a potential threat to groundwater in Anthrosols and Lixisols.

Lang Liu et al.

Status: closed (peer review stopped)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on soil-2021-125', Anonymous Referee #1, 08 Dec 2021
    • AC1: 'Reply on RC1', Baotong Li, 15 Dec 2021
  • RC2: 'Comment on soil-2021-125', Anonymous Referee #2, 13 Jan 2022
  • EC1: 'Comment on soil-2021-125', Maria Jesus Gutierrez Gines, 30 Jan 2022

Status: closed (peer review stopped)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on soil-2021-125', Anonymous Referee #1, 08 Dec 2021
    • AC1: 'Reply on RC1', Baotong Li, 15 Dec 2021
  • RC2: 'Comment on soil-2021-125', Anonymous Referee #2, 13 Jan 2022
  • EC1: 'Comment on soil-2021-125', Maria Jesus Gutierrez Gines, 30 Jan 2022

Lang Liu et al.

Lang Liu et al.

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Short summary
In this paper, in order to investigate whether the migration behavior of pesticides in soil can lead to soil and groundwater contamination, thin layer chromatography and soil column leaching were used to study the horizontal and vertical migration behavior of pesticides in soil.