Full TGIF Record # 150431
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DOI:10.2134/jeq2008.0378
Web URL(s):https://dl.sciencesocieties.org/publications/jeq/pdfs/38/4/1511
    Last checked: 11/10/2016
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https://dl.sciencesocieties.org/publications/jeq/articles/38/4/1511
    Last checked: 11/07/2016
    Access conditions: Item is within a limited-access website
Publication Type:
i
Refereed
Author(s):Watts, D. B.; Torbert, H. A.
Author Affiliation:United States Department of Agriculture - Agricultural Research Service, National Soil Dynamics Lab, Auburn, Alabama
Title:Impact of gypsum applied to grass buffer strips on reducing soluble P in surface water runoff
Section:Technical reports: Surface water quality
Other records with the "Technical reports: Surface water quality" Section
Source:Journal of Environmental Quality. Vol. 38, No. 4, July/August 2009, p. 1511-1517.
Publishing Information:Madison, Wisconsin: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
# of Pages:7
Keywords:TIC Keywords: Gypsum; Filter strips; Water quality; Surface runoff; Precipitation; Air temperature; Soil amendments; Festuca arundinacea; Animal manures; Application rates; Phosphorus
Abstract/Contents:"The threat of P transport from land applied manure has resulted in water quality concerns. Research was conducted to evaluate gypsum as a soil amendment applied to grass buffer strips for reducing soluble P in surface runoff. A simulated concentrated flow was created in an established tall fescue (Festuca arundinacea Schreb.) pasture. Poultry litter (PL) was applied at a rate of 250 kg N ha-1 to the upper 3.05 m of each plot, while gypsum was applied at rates of 0, 1, 3.2, and 5.6 Mg ha-1to the lower 1.52 m of the plot functioning as a grass buffer strip. Two 30-min runoff events (~4 L min-1) were conducted, immediately after PL application and 4 wk later to determined soluble P concentration in the surface water samples. The greatest concentration of soluble P was in the runoff event occurring immediately after the PL application. Gypsum applied to grass buffer strips was effective in reducing soluble P concentrations (32-40%) in surface runoff, while the untreated buffer strip was somewhat effective in reducing soluble P (18%). No significant differences were observed between gypsum rates, suggesting that land managers would achieve the greatest benefit from the lowest application rate (1 Mg ha-1). In the second runoff event, although concentrations of soluble P in the surface water runoff were greatly reduced, the effect of gypsum had disappeared. Thus, these results show that gypsum is most effective in reducing the initial P losses from PL application when applied to grass buffer strips. The information obtained from this study may be useful in aiding land managers in developing management practices that reduce soluble P loss at the edge of a field."
Language:English
References:42
Note:Figures
Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Watts, D. B., and H. A. Torbert. 2009. Impact of gypsum applied to grass buffer strips on reducing soluble P in surface water runoff. J. Environ. Qual. 38(4):p. 1511-1517.
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DOI: 10.2134/jeq2008.0378
Web URL(s):
https://dl.sciencesocieties.org/publications/jeq/pdfs/38/4/1511
    Last checked: 11/10/2016
    Requires: PDF Reader
    Access conditions: Item is within a limited access website
https://dl.sciencesocieties.org/publications/jeq/articles/38/4/1511
    Last checked: 11/07/2016
    Access conditions: Item is within a limited-access website
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