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Publication Type:
| 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
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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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