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Title:Transformation Kinetics and Mechanism of the Sulfonylurea Herbicides Pyrazosulfuron Ethyl and Halosulfuron Methyl in Aqueous Solutions
Author(s):Zheng, Wei; Yates, Scott R.; Papiernik, Sharon K.
Subject(s):Pesticides -- Environmental aspects
Sulfonylurea
Pyrazosulfuron ethyl
Halosulfuron methyl
Cyclodextrin
Hydrolysis
Abstract:Little is known about how popular herbicides react and degrade in soil or aquatic environments. Two of these herbicides include Pyrazosulfuron Ethyl (PE) and Halosulfuron Methyl (HM), which are part of the sulfonylurea herbicide category. Both are post-emergence herbicides and are so highly effective that they need to be applied only at rates of grams per hector. Because these herbicides inhibit the key enzyme that participates in protein synthesis in plants, they can have a major effect on sensitive agricultural areas such as legumes or pastures for grazing. Typically these types of herbicides only degrade because of microbial influences or chemical hydrolysis. To understand the pathway and conditions for chemical hydrolysis degradation, ISTC’s Wei Zheng collaborated with researchers at the U.S. Department of Agriculture to conduct several laboratory experiments. Full results reported in Zheng, Wei et al (2008). "Transformation Kinetics and Mechanism of the Sulfonylurea Herbicides Pyrazosulfuron Ethyl and Halosulfuron Methyl in Aqueous Solutions." Journal of Agricultural and Food Chemistry 56(16), 7367-7372. https://doi.org/10.1021/jf800899e
Issue Date:2008
Publisher:Champaign, IL : Illinois Sustainable Technology Center
Series/Report:Pollutants -- Agricultural chemicals
Genre:Other
Type:Text
Language:English
URI:https://doi.org/10.1021/jf800899e
http://hdl.handle.net/2142/106034
Date Available in IDEALS:2020-01-14


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