University of Illinois Urbana-Champaign

Transformation Kinetics and Mechanism of the Sulfonylurea Herbicides Pyrazosulfuron Ethyl and Halosulfuron Methyl in Aqueous Solutions

Zheng, Wei; Yates, Scott R.; Papiernik, Sharon K.

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https://hdl.handle.net/2142/106034

Description

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.
Issue Date
2008
Keyword(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"
Publisher
Champaign, IL : Illinois Sustainable Technology Center
Series/Report Name or Number
Pollutants -- Agricultural chemicals
Type of Resource
text
Language
en
Permalink
  • https://doi.org/10.1021/jf800899e
  • http://hdl.handle.net/2142/106034

Owning Collections

Research Projects -- Illinois Sustainable Technology Center PRIMARY
Completed research projects done by Illinois Sustainable Technology Center staff