Adsorption and Desorption of Methiopyrsulfuron in Soils

Methiopyrsulfuron is a new low-rate sulfonylurea herbicide for weed control in wheat; however, there is a lack of published information on its behavior in soils. In this study, methiopyrsulfuron adsorption and desorption were measured in seven soils sampled from Heilongjiang, Shandong, Jiangxi, Sich...

Full description

Saved in:
Bibliographic Details
Published in:Pedosphere 2011-06, Vol.21 (3), p.380-388
Main Authors: WU, Chun-Xian, WANG, Jin-Jun, ZHANG, Su-Zhi, ZHANG, Zhong-Ming
Format: Article
Language:English
Subjects:
Freundlich equation
Freundlich方程
herbicide
hysteresis
organic matter
Triticum aestivum
吸附等温线
土壤pH值
土壤有机质含量
土壤采样
杂草控制
磺酰脲类除草剂
解吸
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Methiopyrsulfuron is a new low-rate sulfonylurea herbicide for weed control in wheat; however, there is a lack of published information on its behavior in soils. In this study, methiopyrsulfuron adsorption and desorption were measured in seven soils sampled from Heilongjiang, Shandong, Jiangxi, Sichuan, Anhui, and Chongqing provinces of China using a batch equilibrium method. The Freundlich equation was used to described its adsorption and desorption. Adsorption isotherms were nonlinear with the values of Kf-ads, the Freundlich empirical constant indicative of the adsorption capacity, ranging from 0.75 to 2.46~ suggesting that little of this herbicide was adsorbed by any of the seven soils. Soil pH and organic matter content （OM） were the main factors influencing adsorption; adsorption was negatively correlated with pH and positively correlated with OM. Methiopyrsulfuron desorption was hysteretic on the soils with high OM content and low pH.
ISSN:1002-0160
2210-5107
DOI:10.1016/S1002-0160(11)60139-2