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| Web URL(s): | http://archive.lib.msu.edu/tic/rpr/1995/Environmental/31037,%20UGA,%20Smith.PDF
Last checked: 11/07/2013
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| Publication Type:
| Report |
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| Material Type: | Manuscript |
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| Monographic Author(s): | Smith, Albert E.; Bridges, D. C. |
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| Author Affiliation: | Department of Crop and Soil Sciences, Georgia Experiment Station, University of Georgia, Griffin, GA |
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| Monograph Title: | Evaluation of the Potential Movement of Pesticides Following Application to Golf Courses: [1995 Annual Research Report], 1995. |
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| Publishing Information: | Griffin, Georgia: Department of Crop and Soil Sciences, Georgia Experiment Station, University of Georgia |
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| # of Pages: | 29 |
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| Collation: | [1], 28 pp. |
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| Abstract/Contents: | "Funding provided by USGA for the previous project (1991-1994) resulted in the development of facilities at the Georgia Experiment Station and the initiation of a research program to determine the potential movement of pesticides following application to golf courses. The research focus during the first three years was to use lysimeters developed in the greenhouse and outside for the determination of the potential for pesticides to move through golf course greens. Data indicated that only small quantities (<1%) of the applied 2,4-D DMA, dicamba DMA, mecoprop DMA, dithiopyr, chlorpyrifos, and chlorothalonil are transported through the sod and the lysimeters. In summary, it appeared that the dynamics of a well maintained sod contribute to a high adsorption and decomposition rate for these pesticides and the GLEAMS model, developed for agricultural row-crops, underestimates the dynamics of the ecosystem around the sod. Research has been continued to document movement of additional pesticides through the lysimeters and to resolve the differences between the GLEAMS model prediction of analyte transport and data obtained from the lysimeters. Results of recent studies indicated that only small quantities of methyl bromide and bromide ion were transported through the outside lysimeters following treatment with methyl bromide. It can be concluded that the small quantities transported would be of minor importance compared to the quantities released as a gas following fumigation. Plots to determine the potential transport of pesticides in runoff water from treated plots during storm events were developed on soils typical of the Piedmont region. As much as 40-70% of the rainfall left the plots as runoff during simulated storm events. The collected surface water contained moderately high concentrations of treatment pesticides having a high water solubility. Data for 9 analytes resulted in a high correlation (r2=0.91) between the fraction of analyte transported and the water solubility for the analyte when fit to a quadratic equation. Less than 1% of the applied chlorothalonil, chlorpyrifos, benefin, and pendimethalin was transported from the plots in the runoff water. Whereas, as much as the 9-16% of the 2,4-D, dicamba, mecoprop, and nitrate were transported in the surface water from the first 2 simulated storm events. Compared to broadcast application, pressure injection decreased the fraction of 2,4-D (7.4X) and trichlorphon (5.2X) transported and the inclusion of a buffer strip between the points of treatment and water collection did not significantly reduce the fraction of analyte transported. Research on reducing the potential movement of pesticides in surface water will be continued. Leachate collected from lysimeters under practice greens at a Town and Country golf course contained only trace quantities of chlorothalonil, chlorpyrifos, and OH-chlorpyrifos. Slightly more OH-chlorothalonil and nitrate were determined in the leachate in response to treatments with chlorothalonil and fertilizer. Results of a project designed to determine the potential herbicide exposure from kneeling on a treated golf course indicate that an average sized golfer can kneel as much as 20,000 times on greens, at 6 hours after treatment with 2,4-D, mecoprop, and dicamba, before receiving an exposure equal to the NOEL." |
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| Language: | English |
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| References: | 0 |
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| See Also: | See also related summary article "Potential movement of certain pesticides following application to golf courses" [USGA], 1995, p. 76-77, R=31037. R=31037 |
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| Note: | Also appears as pp. 00084-00113 in the USGA Turfgrass Research Committee Reporting Binders for 1995.
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
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Last checked: 11/07/2013
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