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| Publication Type:
| Refereed |
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| Author(s): | Moorman, Thomas B. |
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| Author Affiliation: | Soil Microbiology, U.S. Dep. Agric., Agric. Res. Serv., Southern Weed Sci. Lab., Stoneville, MS. |
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| Title: | Populations of EPTC-Degrading Microorganisms in Soils with Accelerated Rates of EPTC Degradation |
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| Source: | Weed Science. Vol. 36, No. 1, January 1988, p. 96-101. |
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| Publishing Information: | Champaign, IL: Weed Science Society of America |
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| Keywords: | TIC Keywords: Degradation; Adaptability; Herbicides; Persistence; Soils; EPTC
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| Abstract/Contents: | "Reduced effectiveness of carbamothioate (thio-carbamate) herbicides in certain soils has been attributed to rapid herbicide degradation by soil microorganisms. Studies were conducted to determine if greater populations of EPTC (S-ethyl dipropyl carbamothioate)-degrading microorganisms were responsible for increased rates of degradation observed following repeated applications of EPTC to a Grenada silt loam soil. EPTC-degrading microorganism populations, measured with a 14C-MPN (most-probable-number) technique, were not larger in soils with accelerated rates of EPTC degradation, and degrader populations did not increase after application of 6 mg EPTC/kg of soil. Degrader populations increased after application of 60 mg EPTC/kg of soil only in soil previously treated for 6 yr with EPTC. Increased rates of metabolism of EPTC were apparently responsible for the increased rates of degradation, rather than increased populations of degraders." |
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| Language: | English |
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| References: | 26 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Moorman, T. B. 1988. Populations of EPTC-Degrading Microorganisms in Soils with Accelerated Rates of EPTC Degradation. Weed Sci. 36(1):p. 96-101. |
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MSU catalog number: SB 610 .W38 |
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