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| Web URL(s): | https://dl.sciencesocieties.org/publications/jeq/pdfs/21/4/JEQ0210040595
Last checked: 12/12/2016
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Notes: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Smith, S. J.;
Sharpley, A. N.;
Berg, W. A.;
Naney, J. W.;
Coleman, G. A. |
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| Author Affiliation: | USDA-ARS-SPA, National Agricultural Water Quality Lab and Southern Plains Range Research Station |
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| Title: | Water quality characteristics associated with southern plains grasslands |
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| Source: | Journal of Environmental Quality. Vol. 21, No. 4, October-December 1992, p. 595-601. |
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| Publishing Information: | Madison, Wisconsin: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America |
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| # of Pages: | 7 |
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| Keywords: | TIC Keywords: Water quality; Nutrients; Surface runoff; Groundwater
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| Abstract/Contents: | "Water quality information regarding grasslands in the Southern Plains of Oklahoma and Texas is sparse. The objective of this study was to determine the extent to which the area's surface and groundwater quality is influenced by native and introduced grass management practices. Concentrations and amounts of sediment, N, and P in surface runoff water were determined for 14, 1- to 6-ha watersheds in the Reddish Prairie and Rolling Red Plain land resource areas for periods of 3 to 13 yr. In genera, surface water quality grass species, area grazing practices, or recommended fertilizer rates, but sediment losses were curtailed greatly by gully amelioration. Mean annual discharge ranged from 30 to 71 000 kg ha-1 for sediment, 0.1 to 11 kg ha-1 for total N, and 0.02 to 4 kg ha-1 for total P. Highest losses were from watersheds with established, active gullies. Annual soluble nutrient losses in surface runoff tended to be small, often <1kg ha-1 N or P. Successful prediction of soluble P, particulate P, and particluate N in surface runoff was achieved using appropriate kinetic desorption and enrichment ratio procedures. Soluble N in surface runoff posed few water quality problems, but soluble and total P concentrations often exceeded proposed 0.01 and 0.02 mg L-1 respective critical limits for eutrophication, even on the more pristine watersheds. In the case of groundwaters, occasional, elevated NO3-N (i.e., 18 mg L-1 maximum) concentrations were observed beneath certain N fertilized, introduced and native grasses on shallow water table (3-20 m depth), medium-textured soils." |
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| Language: | English |
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| References: | 35 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Smith, S. J., A. N. Sharpley, W. A. Berg, J. W. Naney, and G. A. Coleman. 1992. Water quality characteristics associated with southern plains grasslands. J. Environ. Qual. 21(4):p. 595-601. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/jeq/pdfs/21/4/JEQ0210040595
Last checked: 12/12/2016
Requires: PDF Reader
Notes: Item is within a limited-access website |
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MSU catalog number: S 900 .J6 |
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