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| Publication Type:
| Refereed |
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| Author(s): | Flint, Jerry L.;
Witt, William W. |
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| Author Affiliation: | Department of Agronomy, University of Kentucky, Lexington, KY 40546 |
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| Title: | Microbial degradation of imazaquin and imazethapyr |
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| Section: | Soil, Air, and Water
Other records with the "Soil, Air, and Water" Section
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| Source: | Weed Science. Vol. 45, No. 4, July/August 1997, p. 586-591. |
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| Publishing Information: | Champaign, IL: Weed Science Society of America |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Biodegradation; Carbon dioxide; Herbicide persistence; Evolution; Imazethapyr; Imazaquin
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| Abstract/Contents: | "Laboratory studies were conducted to investigate the processes of imazaquin and imazethapyr degradation in soil. Microbial degradation of ¹⁴C-imazaquin and ¹⁴c-imazethapyr was monitored by measuring ¹⁴CO₂ evolution compared to nonsterile soil. ¹⁴CO₂ evolution was greatest from carboxyl-labelled imazaquin and imazethapyr compared to ring-labelled imazaquin and imazethapyr. A corn root bioassay indicated nearly complete loss of herbicidal activity in nonsterile soil after 5 mo, but herbicide activity was reduced only 14% in sterile soil. ¹⁴CO₂ evolution more than doubled when soil temperature increased from 15 to 30 C. Total CO₂ production responded similarly. Degradation of imzaquin and imazathapyr increased as soil moisture increased from 15% (-2.4 MPa) to 75% of field capacity (-0.03 MPa)." |
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| Language: | English |
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| References: | 34 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Flint, J. L., and W. W. Witt. 1997. Microbial degradation of imazaquin and imazethapyr. Weed Sci. 45(4):p. 586-591. |
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MSU catalog number: SB 610 .W38 |
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