| Persistence of the herbicide butachlor in soil after repeated applications and its effects on soil microbial functional diversity. | |
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MedLine Citation:
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PMID: 19130370 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Effects of repeated applications of the herbicide butachlor (N-(butoxymethyl)-2-chloro -N-2',6'-dimethyl acetanilide) in soil on its persistence and soil microbial functional diversity were investigated under laboratory conditions. The degradation half-lives of butachlor at the recommended dosage in soil were calculated to be 12.5, 4.5, and 3.2 days for the first, second, and third applications, respectively. Throughout this study, no significant inhibition of the Shannon-Wiener index H' was observed. However, the Simpson index 1/D and McIntosh index U were significantly reduced (P < or = 0.05) during the initial 3 days after the first application of butachlor, and thereafter gradually recovered to a similar level to that of the control soil. A similar variation but faster recovery in 1/D and U was observed after the second and third Butachlor applications. Therefore, repeated applications of butachlor led to more rapid degradation of the herbicide, and more rapid recovery of soil microorganisms. It is concluded that repeated butachlor applications in soil had a temporary or short-term inhibitory effect on soil microbial communities. |
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Authors:
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Hua Fang; Yun L Yu; Xiu G Wang; Xiao Q Chu; Xiao E Yang |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes Volume: 44 ISSN: 1532-4109 ISO Abbreviation: J Environ Sci Health B Publication Date: 2009 Feb |
Date Detail:
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Created Date: 2009-01-08 Completed Date: 2009-03-19 Revised Date: 2009-07-21 |
Medline Journal Info:
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Nlm Unique ID: 7607167 Medline TA: J Environ Sci Health B Country: United States |
Other Details:
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Languages: eng Pagination: 123-9 Citation Subset: IM |
Affiliation:
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Department of Plant Protection, College of Agriculture & Biotechnology, Zhejiang University, Hangzhou, China. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acetanilides
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analysis*,
metabolism,
pharmacology Agriculture* Algorithms Biodegradation, Environmental Biodiversity* Chromatography, Gas Half-Life Herbicides / analysis*, metabolism, pharmacology Soil Microbiology* Soil Pollutants / analysis*, metabolism, pharmacology |
| Chemical | |
Reg. No./Substance:
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0/Acetanilides; 0/Herbicides; 0/Soil Pollutants; 23184-66-9/butachlor |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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