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| Web URL(s): | http://archive.lib.msu.edu/tic/rpr/2000/72157,%20U%20Georgia,%20Shuman.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): | Shuman, Larry M. |
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| Author Affiliation: | Department of Crop and Soil Sciences, University of Georgia, Griffin, GA |
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| Monograph Title: | Nitrate and Phosphorous Leaching and Runoff from Golf Greens and Fairways: 2000 Annual Report to the United States Golf Association, 2000. |
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| Publishing Information: | Griffin, Georgia: University of Georgia |
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| # of Pages: | 31 |
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| Collation: | [31] pp. |
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| Abstract/Contents: | "This project was initiated in 1998 to determine the potential transport of nitrogen and phosphorous by runoff of surface water from fairways and by leaching through golf greens. Experiments on leaching are being carried out at two venues (one greenhouse and one field) and runoff experiments at one field site on campus. A fourth site involves monitoring leachate from three greens at an Atlanta golf course. Highlights of results for this year are reported for each of the four venues. Two runoff experiments were carried out in 2000 on bermudagrass plots with a 5% slope. We repeated an experiment using 10-10-10 at 3 rates and carried out a similar experiment except that 0.25" irrigation was added after application (watered-in) before simulated rainfall events. Most P was transported at the first rainfall event where step-wise increases in P concentration and mass were found for the 5 and 11 kg P ha-1 rates. Results compare well with these found the first year. The results of "watering-in" have not been evaluated. An eight-source experiment at one rate (11 kg P/ha) was carried out in the greenhouse on columns made to USGA specifications for greens and sodded with bermudagrass. Treatments were added 4 times. Cumulative P mass rose rapidly for the soluble 20-20-20 and the granular 16-25-12 (Fig. 1). The next two were the granular 13-13-13 and 10-10-10 with the other 4 sources being lower with respect to P leaching. Five sources had similar N rates (24 kg N/ha)and could be compared. A soluble 20-20-20 source had the highest N loss based on that added (15.7%) whereas a poly- and sulfur-coated microgranule 13-13-13 and sulfur-coated urea had the lowest (3.4 and 1.8%, respectively). Four treatments at three rates were made to field lysimeters in 1999 with the sources being a granular poly- and sulfur-coated 13-13-13 and a water soluble 20-20-20. In the spring of 1999 we started a series of treatments that showed treatment effects. Treatments were added first on April 2, 1999 (week 32) and gain on weeks 40 and 47. The P treatments began to be evident as increased P concentration in the leachate after week 64 in November, 1999. This is really the only P response found in the entire three years of the experiment. The soluble 20-20-20 source gave higher and earlier peak than for the controlled-release 13-13-13 for the high P rate (Fig. 2). The 1999 P concentration and mass data show that P in the leachate was again very low for the practice green built in 1994 in Atlanta. The new playing greens, built in the fall of 1998, show a P concentration peak just after start-up with decreases thereafter. This data corresponds with data from 1995 for the practice greens where P concentrations were high initially. The P comes from starter fertilizer and possibly from the peat in the sand-peat mix. Nitrate concentrations and mass followed a trend similar to that for P and were generally below the 10 mg L-1 drinking water standard." |
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| Language: | English |
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| References: | 0 |
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| See Also: | See also related summary article, "Nitrogen and phosphorus leaching and runoff from golf greens and fairways", 2000 Turfgrass and Environmental Research Summary [USGA], 2000, p. 55, R=72157. R=72157 |
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| Note: | Tables
Graphs
"2000 Annual Report to the United State Golf Association"
Also appears as pp. 197-227 in the USGA Turfgrass Research Committee Reporting Binders for 2000. |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
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Last checked: 02/11/2013
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