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| Web URL(s): | http://archive.lib.msu.edu/tic/rpr/2000/72161,%20Cornell,%20Haith,%20Volatile.PDF
Last checked: 02/11/2013
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Material Type: | Manuscript |
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| Monographic Author(s): | Haith, Douglas A. |
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| Author Affiliation: | Cornell University, Principal Invesitagtor |
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| Monograph Title: | Development & Testing of Indices & Models of Pesticide Volatilization from Turfgrass: 2000 Progress Report to Green Section Research, 2000. |
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| Publishing Information: | Ithaca, New York: Dept. of Agricultural & Biological Engineering, Cornell University |
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| # of Pages: | 6 |
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| Collation: | [6] pp. |
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| Abstract/Contents: | "Goals Develop and test concise indicators of volatilization hazard that can be used by turf managers to determine the likely degree of health hazard associated with pesticide applications.; Develop and test alternative models of turfgrass pesticide volatilization. Progress The M2Cm model proposed by Weed et al. (1999) was adapted to estimate volatilization losses from turf. The model assumes that pesticide vaporization is proportional to water vaporization (evapotranspiration, ET) and degradation is first order or exponential. Our approach was to estimate the rate constant from solar radiation and heat vaporization. We also assume that the proportionality constant (β), is invariant within the chemical volatilization classes proposed by Clark et al. (2000). Model testing was based on data from field turf experiments at the University of Massachusetts, Amherst. Testing data covered 20 week-long experiments during 1995-97. For high volatilization group, β was estimated by fitting the first week's model results for ethoprop to observations. The first week's data for chlorpyrifos was similarly used to determine β for the intermediate group. Testing results are shown in Table 1. Although individual weeks or experiments are not always well-fitted by the model, mean volatilization losses for each chemical are relatively accurate. More significantly, these means correctly reflect the relative differences in volatilization levels among chemicals." |
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| Language: | English |
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| References: | 5 |
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| See Also: | See also related summary article, "Development and testing of indices and models of pesticide volatilization from turfgrass", 2000 Turfgrass and Environmental Research Summary [USGA], 2000, p. 59, R=72161. R=72161 |
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| Note: | Tables
"November 1, 2000"
"2000 Progress Report to Green Section Research"
Also appears as pp. 180-185 in the USGA Turfgrass Research Committee Reporting Binders for 2000. |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
No defined citation format for TGIF #: 215200 |
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Last checked: 02/11/2013
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