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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Smith, A. E.;
Bridges, D. C. |
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| Author Affiliation: | University of Georgia, Griffin, GA 30223 |
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| Title: | Movement of benzoic and phenoxyalkanoic acid herbicides in surface water following application to golf course fairways |
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| Section: | Papers and Abstracts Presented
Other records with the "Papers and Abstracts Presented" Section
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| Meeting Info.: | 49th Annual Meeting, Charlotte, NC, January 15-17, 1996 |
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| Source: | Southern Weed Science Society Proceedings. Vol. 49, 1996, p. 71-72. |
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| Publishing Information: | Champaign, IL: Southern Weed Science Society. |
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| # of Pages: | 2 |
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| Abstract/Contents: | "Dicamba, 2,4-D, and mecoprop are commonly used for broadleaf weed control on golf course fairways. The purpose of this research was to determine the potential movement of the salt formulations of acid herbicides in runoff water from simulated golf course fairways. Herbicide movement from simulated fairways was determined following treatment of small plots (3.7 x 7.4 m long) having a 5% slope and sodded with 'Tifway' bermudagrass. Runoff water was collected at the end of the plots and analytes in subsamples were quantified. The dimethylamine salt formulations of dicamba (0.56), 2.4-D (2.24), and necoprop (1.68 kg ae/ha) were applied as a broadcast application in 206 L/ha aqueous solution at 166 kPa using a backpack sprayer. Rainfall was simulated at a rate of 3.33 cm/hr through an irrigation system equipped with Wobbler™ sprinkler tips located 3.3 m above the sod. Rainfall events were simulated at 24 (5.0), 48 (5.0), 96 (2.5), and 192 (5.0 cm) hr after treatment (HAT). The treatments were replicated 6 times and the experiment was conducted twice. An average of 48% of the simulated rainfall water left the plots as runoff during the 4 events and 14.6, 9.6, and 14.4% of the applied dicamba, 2,4-D, and mecoprop; respectively; left the treated plots in runoff water. Approximately 75% of the herbicides transported from the plots was in runoff water from the first rainfall event. The highest concentration of the analytes, in the collected runoff water, occurred during the first rainfall event. These concentrations were 360, 800, and 810 ppb dicamba, 2,4-D, and mecoprop, respectively. Approximately 26% of the 2,4-D applied to dormant sod was transported from the treated plots. A 2-m buffer strip at the end of the plots did not decrease the fraction of applied analyte transported from the plots and pressure injection of 2,4-D in 4,700 L/ha water applied at 21.3 MPa decreased the fraction transported to 1.3% of the applied analyte. These data indicate that there is a need for the development of management strategies to decrease the potential movement of water soluble pesticides in runoff water from turfgrass sites in the southeastern United States." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Smith, A. E., and D. C. Bridges. 1996. Movement of benzoic and phenoxyalkanoic acid herbicides in surface water following application to golf course fairways. South. Weed Sci. Soc. Proc. 49:p. 71-72. |
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MSU catalog number: SB 611 .S6 |
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