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| Web URL(s): | https://dl.sciencesocieties.org/publications/jeq/pdfs/27/4/JEQ0270040821
Last checked: 12/12/2016
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| Publication Type:
| Refereed |
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| Author(s): | Wang, Dong;
Yates, S. R.;
Jury, W. A. |
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| Author Affiliation: | Wang and Yates: U.S. Salinity Lab., Soil Physics and Pesticides Res. Unit, 450 West Big Springs Rd., Riverside, CA 92507-4617; Jury: Dep. of Soil and Environmental Sciences, Univ. of California, Riverside, CA 97521 |
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| Title: | Temperature effect on methyl bromide volatilization: Permeability of plastic cover films |
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| Source: | Journal of Environmental Quality. Vol. 27, No. 4, July/August 1998, p. 821-827. |
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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: | 7 |
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| Keywords: | TIC Keywords: Temperatures; Methyl bromide; Volatility; Permeability; Polyethylene covers; Fate; Comparisons
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| Abstract/Contents: | "Conventional methods of applying methyl bromide (MeBr) for soil fumigation can result in significant losses to the atmosphere, potentially contributing to the depletion of stratospheric ozone. It has been found that one of the major factors controlling MeBr volatilization is the permeability of the plastic cover films. Since the most commonly used agricultural film (i.e., polyethylene or PE) is not effective in containing MeBr, one practical method of reducing MeBr volatilization is to replace the PE film with one that is less permeable to MeBr. In this study, we document the temperature-dependent permeability of standard PE and a new plastic film (Hytibar) that is considered to be virtually impermeable to MeBr. Functional relationships between temperature and the film permeability to MeBr were obtained from a calibration experiment under controlled conditions. A field experiment was conducted to determine MeBr volatilization dynamics from plots covered with the two different plastic films. A diffusion-based transport model was used to simulate the fate and transport of MeBr gas in the soil and volatilization into the atmosphere. In both the calibration and field experiment, the Hytibar film was found to be nearly impermeable to MeBr. Volatization of MeBr was affected directly by temperature changes of the PE or Hytibar film in the calibration experiment. Under field conditions, MeBr emission was less affected by temperature, especially at large times after application. Model simulation predicted MeBr volatilization reasonably well for the PE covered field plot, but overpredicted the emission for the Hytibar plot." |
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| Language: | English |
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| References: | 24 |
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| See Also: | Other items relating to: MEBR |
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| Note: | Figures
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Wang, D., S. R. Yates, and W. A. Jury. 1998. Temperature effect on methyl bromide volatilization: Permeability of plastic cover films. J. Environ. Qual. 27(4):p. 821-827. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/jeq/pdfs/27/4/JEQ0270040821
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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