Full TGIF Record # 19387
Item 1 of 1
Publication Type:
i
Refereed
Author(s):Goetz, Andrew J.; Lavy, Terry L.; Gbur, Edward E. Jr.
Author Affiliation:Grad. Asst. and Univ. Prof., Dept. Agron. Univ. Arkansas, Fayetteville, AR. Asst. Prof., Agric. Statistics Lab. Univ. Arkansas, Fayetteville, AR.
Title:Degradation and field persistence of imazethapyr
Source:Weed Science. Vol. 38, July-September 1990, p. 421-428.
Publishing Information:Champaign, IL: Weed Science Society of America
Keywords:TIC Keywords: Imazethapyr; Volatility; Photolysis; Degradation; Persistence
Abstract/Contents:"The volatization, photolysis, microbial degradation and field persistence of imazethapyr were studied using formulated and 14C-labeled imazethapyr. Volatilization losses from soil were less than 2%. Photodecomposition losses of up to 8% occurred from soil and up to 52% from a glass slide with no soil. Significantly greater photodecomposition occurred with chain-labeled than ring-labeled 14C-imazethapyr. The amount of 14CO2 evolution from soil treated with either ring- or chain- labeled 14C-imazethapyr was not significantly different. The total 14CO2 evolved from the soils ranged from 2.4 to 3.6% of the total 14C-imazethapyr applied to the soil. However, degradation of imazethapyr from the same soils, as determined by high-pressure liquid chromatography, indicated that 62 to 82% of the applied 14C-imazethapyr had been degraded. The degradation rate increased as soil moisture was increased from -100 to -33 kPa. Imazethapyr was more persistent in soil with the higher clay and organic matter content."
Language:English
References:10
Note:Tables
Graphs
Numbers 4-5
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Goetz, A. J., T. L. Lavy, and E. E. Jr. Gbur. 1990. Degradation and field persistence of imazethapyr. Weed Sci. 38:p. 421-428.
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