Loss of Phosphorus by Runoff for Agricultural Watersheds

Elrashidi, M. A.; Mays, M. D.; Harder, J.; Schroeder, D.; Brakhage, P.; Peaslee, S. D.; Seybold, Cathy A.; Schaecher, C.

doi:10.1097/00010694-200507000-00006

Cited by 15 publications

(10 citation statements)

References 16 publications

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“…When the entire watershed area (4042 ha) was considered, the total annual runoff accounted for 4.31 million mn 3 of water. The observed average annual inflow to the WT reservoir for a 50-year period between 1951 and 2000 was 4.25 million m 3 (USGS, 2001; Elrashidi et al, 2005b). The predicted annual runoff and the observed annual inflow appear in good agreement.…”

Section: Runoff and Reservoir Inflowmentioning

confidence: 74%

“…Factors affecting AEEs concentration in runoff water after leaving field sites might decrease or increase the observed values in stream water and should be taken into consideration. In previous studies, Elrashidi et al (2005aElrashidi et al ( , 2005b reported that P and nitrate-N removal by aquatic weeds and algae in streams has decreased observed concentrations in water. On the other hand, a subsurface seepage that discharge directly into streams might contribute to the high Ba and Sr concentrations observed in water samples collected from the main stream.…”

Section: Elements Loading Into Hit Reservoirmentioning

confidence: 97%

“…1). The analysis for major streams proved that samples taken from the main stream are representative of runoff generated from the entire watershed (Elrashidi et al, 2005a(Elrashidi et al, , 2005b.…”

Section: Soil and Water Samplingmentioning

confidence: 99%

“…But these models are too complex and expensive because they require very extensive data input. The U.S. Department of Agriculture Natural Resources Conservation Service (USDA/NRCS) developed an exploratory technique (Elrashidi et al, 2004(Elrashidi et al, , 2005a(Elrashidi et al, , 2005b to estimate elements loss by runoff for agricultural watersheds. The technique is quick and cost-effective because it utilizes existing climatic, hydrologic, and soil survey databases.…”

mentioning

confidence: 99%

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Loss of Alkaline Earth Elements by Runoff From Agricultural Watersheds

Elrashidi¹,

Hammer²,

Mays³

et al. 2007

Soil Science

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Section: Runoff and Reservoir Inflowmentioning

confidence: 74%

Section: Elements Loading Into Hit Reservoirmentioning

confidence: 97%

Section: Soil and Water Samplingmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Loss of Alkaline Earth Elements by Runoff From Agricultural Watersheds

Elrashidi¹,

Hammer²,

Mays³

et al. 2007

Soil Science

Self Cite

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“…Frere, Ross, and Lane (1980), however, suggested an interaction zone of 10 mm, assuming that only a fraction of the chemical present in this depth interacts with rainfall water. Elrashidi et al (2005aElrashidi et al ( , 2005bElrashidi et al ( , 2008Elrashidi et al ( , 2009) used a fixed soil thickness of 10 mm to estimate P and nitrate N loss by runoff for agricultural watersheds in Nebraska and West Virginia.…”

Section: Nrcs Techniquementioning

confidence: 99%

Effects of Precipitation on Nonpoint Sources of Nitrogen Contamination to Surface Waters in the U.S. Great Plains

Elrashidi

2014

Communications in Soil Science and Plant Analysis

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Declining surface water quality is of great concern across the Great Plains. Recent trends in the earth's climate can create abrupt changes in precipitation, which can alter the impact of nonpoint sources on water quality. A 2-year study [dry (2009) and wet (2010) year] was initiated to assess the impact of nitrate nitrogen (N) loss from the Roca watershed on water quality in Salt Creek. The water flow and nitrate N concentration was determined weekly in Salt Creek. The predicted average nitrate N concentration in runoff during the dry year (38.3 mg L −1 ) was almost five times greater than that (7.9 mg L −1 ) for the wet year. However, the predicted amount of nitrate N in runoff was similar for both years because the runoff for the wet year (51.8 million m 3 ) was about five times greater than that for the dry year (10.7 million m 3 ). The total amount of nitrate N found in Salt Creek was 18 and 127 metric tons for the dry and wet years, respectively. These data implied that 95% (dry year) and 69% (wet year) of the nitrate N has been removed from streams water in Salt Creek. Factors responsible for removing nitrate N from water include heavy growth of algae, weeds, and aquatic plants as well as denitrification and volatilization reactions. The predicted amount of nitrate N lost from soils by leaching was almost seven times greater for the wet (1,037 metric tons) than the dry year (156 metric tons). It was concluded that high precipitation for the wet year raised both the amount of nitrate N in runoff and loading into Salt Creek and could increase the negative impact on water quality.

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2006

Hydrological Processes

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Loss of Phosphorus by Runoff for Agricultural Watersheds

Cited by 15 publications

References 16 publications

Loss of Alkaline Earth Elements by Runoff From Agricultural Watersheds

Loss of Alkaline Earth Elements by Runoff From Agricultural Watersheds

Effects of Precipitation on Nonpoint Sources of Nitrogen Contamination to Surface Waters in the U.S. Great Plains

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