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| Web URL(s): | https://dl.sciencesocieties.org/publications/jeq/pdfs/28/5/JEQ0280051436
Last checked: 12/12/2016
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| Publication Type:
| Refereed |
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| Author(s): | Gan, J.;
Papiernik, S. K.;
Yates, S. R.;
Jury, W. A. |
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| Author Affiliation: | Gan, Papiernik, and Yates: USDA-ARS, Soil Physics and Pesticides Research Unit, U.S. Salinity Laboratory, Riverside, CA; Jury: Department of Environmental Sciences, University of California, Riverside, CA |
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| Title: | Temperature and moisture effects on fumigant degradation in soil |
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| Section: | Organic compounds in the environment
Other records with the "Organic compounds in the environment" Section
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| Source: | Journal of Environmental Quality. Vol. 28, No. 5, September/October 1999, p. 1436-1441. |
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| Publishing Information: | Madison, Wisconsin: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Soil fumigants; Soil fumigation; Methyl bromide; Degradation; Soil temperature; Soil moisture; Soil water content
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| Abstract/Contents: | "Recent discovery of the contributions of methyl bromide fumigation to stratospheric ozone depletion has revealed our limited understanding of the environmental processes of fumigants. For instance, little is known about fumigant degradation in soil under high temperature or low moisture conditions that prevail near the soil surface during fumigation. In this study we determined the interaction of soil temperature and moisture with degradation of 1,3-dichloropropene (1,3-D) and methyl isothiocyanate (MITC) for extended soil temperature and moisture ranges. Fumigant degradation increased 5 to 12 times when temperature increased from 20 to 50ºC. It was further shown that chemical transformation of fumigants always increased with increasing temperature, but temperature effects on microbial degradation were fumigant dependent. The relative contribution of microbial degradation to the overall fumigant degradation was highest for the soil with highest organic matter content, and was greater for MITC than for 1,3-D isomers. When the temperature was >30ºC, microbial degradation of 1,3-D was substantially suppressed, while that of MITC was greatly stimulated. As soil moisture content increased, 1,3-D degradation accelerated, but that of MITC decreased. The specific responses of fumigant degradation to temperature and moisture variations should be considered when describing their transport in the environment, and also may be used for designing fumigation practices that allow reduced atmospheric emissions." |
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| Language: | English |
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| References: | 28 |
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| See Also: | Other items relating to: MEBR |
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| Note: | Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Gan, J., S. K. Papiernik, S. R. Yates, and W. A. Jury. 1999. Temperature and moisture effects on fumigant degradation in soil. J. Environ. Qual. 28(5):p. 1436-1441. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/jeq/pdfs/28/5/JEQ0280051436
Last checked: 12/12/2016
Requires: PDF Reader
Notes: Item is within a limited-access website |
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MSU catalog number: S 900 .J6 |
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