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| Web URL(s): | http://onlinelibrary.wiley.com/doi/10.1002/(SICI)1096-9063(199904)55:4<423::AID-PS935>3.0.CO;2-B/epdf
Last checked: 10/07/2015
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| Publication Type:
| Refereed |
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| Author(s): | Ma, Qing Li;
Smith, Albert E.;
Hook, James E.;
Bridges, David C. |
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| Author Affiliation: | Ma: USDA-ARS, Nematodes, Weeds, and Crop Research, Tifton, GA; Smith, Hook, Bridges: Department of Crop and Soil Sciences, University of Georgia, Athens, GA |
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| Title: | Surface transport of 2,4-D from small turf plots: Observations compared with GLEAMS and PRZM-2 model simulations |
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| Source: | Pesticide Science. Vol. 55, No. 4, April 1999, p. 423-433. |
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| Publishing Information: | London : for the Society of Chemical Industry by John Wiley & Sons |
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| # of Pages: | 11 |
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| Keywords: | TIC Keywords: 2,4-D; Surface runoff; Fate; Models; Golf fairways; Cynodon
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| Abstract/Contents: | A three-year field study was conducted using twelve 7.4 × 3.7m plots and simulated rainfall to investigate pesticide run-off following application to a golf course fairway. The plots were sprigged with 'Tifway 419' bermudagrass (Cynodon dactylon × C transvaalensis). The dimethylamine salt of 2,4-D [(2,4-dichlorophenoxy)acetic acid] was applied as foliar sprays at a rate of 2.24kg AI ha⁻¹. Simulated rainfall was applied at an intensity of 29 mm h⁻¹ one day before and 1, 2, 4, and 8 days after the pesticide applications for 0.92, 1.75, 1.75, 0.92, and 0.92 h, respectively. Water run-off was measured using a tipping-bucket apparatus and sub-samples were analyzed for pesticide residues. Data collected from the study were also compared with the GLEAMS and PRZM-2 model simulations for surface water and 2,4-D run-off. Mass and concentration of 2,4-D in run-off decreased rapidly, with 74.5% of the total run-off of 2,4-D occurring in the first run-off event after treatment. When calibrated to the site-specific characteristics, the GLEAMS and the PRZM-2 models adequately simulated the average of surface water run-off over all plots, with normalized root mean square error (NRMSE) and coefficient of determination for linear regression (R²) being 22.8% and 0.917 for GLEAMS, and 23.7% and 0.879 for PRZM-2, respectively. However, both GLEAMS (NRMSE = 82.1%, R² = 0.776) and PRZM-2 (NRMSE = 125.8%, R² = 0.513) less accurately simulated 2,4-D concentrations in run-off |
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| Language: | English |
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| References: | 28 |
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| See Also: | Other items relating to: RUNOFF
Other items relating to: 2, 4 - D in Turf |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Ma, Q. L., A. E. Smith, J. E. Hook, and D. C. Bridges. 1999. Surface transport of 2,4-D from small turf plots: Observations compared with GLEAMS and PRZM-2 model simulations. Pest Manage. Sci. 55(4):p. 423-433. |
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| Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1002/(SICI)1096-9063(199904)55:4<423::AID-PS935>3.0.CO;2-B/epdf
Last checked: 10/07/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: SB 951 .A1 P45 |
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