Full TGIF Record # 176524
Item 1 of 1
Publication Type:
i
Report
Author(s):Smith, A. E.; Bridges, D. C.
Author Affiliation:Dep. of Crop and Soil Sciences, Univ. of Georgia College of Agric. and Env. Sci., Georgia Stn., Griffin, GA
Title:Potential movement of pesticides following application golf courses
Section:Invited papers
Other records with the "Invited papers" Section
Meeting Info.:September 16-17, 1996
Source:Proceedings of the 34th Grass Breeders Work PlanningConference. Vol. 34, 1996, p. 56-63.
# of Pages:8
Publishing Information:Griffen, Georgia: Georgia Experiment Station, University of Georgia
Abstract/Contents:"Golf course greens and fairways are intensively managed with pesticides allowing for the potential movement of pesticides into potable water systems. The objectives of this research were to: 1) determine the potential movement of pesticides from simulated golf course greens by effluent transport through the rooting media and 2) determine the potential movement of pesticides from simulated fairways by surface runoff. Lysimeters were developed in greenhourse and outside containing 'Penncross' bentgrass (Agrostis stolonifera L.) or 'Tifdwarf' bermudagrass [Cynodon dactylon (L.) Pers. x C. transvaalensis Burtt-Davy] for collection of leachate from the bases. The lysimeters were filled with rooting media, sand and gravel according to United States Golf Association specifications. We used two types of rooting media consisting of mixtures of sand and sphagnum peat moss at the respective v:v rations of 85:15 or 80:20. Pesticide treatments were applied to the turf sod and irrigation and simulated rainfall events were applied through an automatic watering system. The outside lysimeters were protected by an automatic closing/opening rain shelter. Pesticide movement from simulated fairways was determined following treatment of small plots having a 5% slope and sodded with 'Tifway' bermudagrass. Runoff water was collected and analytes in subsamples were quantified. Only a small fraction of applied pesticides were found in the leachate from the greenhouse and outside lysimeters. The concentrations of these pesticides did not exceed 20 μg L-1 and the total quantity to exit the lysimeters. Over an 8-day period following treatment of the simulated fairways with pesticides 4 rainfall events were simulated. An average of 48% of the rainfall left the plots as runoff. The fraction of pesticides that were transported from the plots was proportional to the water solubility of the analyte. The portions of applied pesticides transported from the plots ranged from 14% for dicamba to less that 1% for benefin and pendimethalin. Approximately 75% of the pesticides transported from the plots were runoff water from the first rainfall event. The highest concentration of the more water-soluble analytes in the collected runoff water occurred during the first rainfall event. These concentrations were 811, 279 and 820 μg L-1 for 2,4-D, dicamba and mecoprop; respectively."
Language:English
References:10
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Smith, A. E., and D. C. Bridges. 1996. Potential movement of pesticides following application golf courses. Proc. N. AM Grass Breeders Conf. 34:p. 56-63.
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MSU catalog number: SB 197 .W42 1984
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