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- Yuan, Y.; Bingner, R.L.; Rebich, R.A.
- Transactions of the ASAE 2001 v.44 no.5 pp. 1183-1190
- watersheds; crop production; crop management; cover crops; winter; pollution control; water pollution; erosion control; water erosion; sediment yield; simulation models; agricultural land; losses from soil; runoff; prediction; best management practices; nonpoint source pollution; Mississippi
- ... Sediment and its associated pollutants entering a water body can be very destructive to the health of that system. Best Management Practices (BMPs) can be used to reduce these pollutants, but understanding the most effective practices is very difficult. Watershed models are the most cost-effective tools to aid in the decision-making process of selecting the BMP that is most effective in reducing t ...
- Schumacher, J.A.; Kaspar, T.C.; Ritchie, J.C.; Schumacher, T.E.; Karlen, D.L.; Venteris, E.R.; McCarty, G.W.; Colvin, T.S.; Jaynes, D.B.; Lindstrom, M.J.; Fenton, T.E.
- Journal of soil and water conservation 2005 v.60 no.6 pp. 355-362
- agricultural land; cesium; conservation practices; cover crops; erosion control; losses from soil; no-tillage; organic matter; precision agriculture; radionuclides; soil; soil erosion models; topography; water erosion; wind erosion; Iowa
- ... The application of site-specific conservation practices requires knowledge of spatial patterns in fields. This study evaluated two methods of delineating soil erosion patterns in a central Iowa field. First, soil erosion rates of individual grid based samples were estimated using soil displacement of cesium-137 (137Cs). Second, tillage and water erosion were estimated using the topography-driven W ...
3. Effects of agricultural conservation practices on oxbow lake watersheds in the Mississippi River alluvial plain
- S.S. Knight; M.A. Locke; S. Smith
- Soil and Water Research v.8 no.3 pp. 113-123
- agricultural land; agricultural runoff; agricultural watersheds; alluvial plains; best management practices; conservation practices; conservation tillage; cover crops; farms; fish; groundwater; groundwater contamination; herbicide residues; herbicides; losses from soil; nitrate nitrogen; nonpoint source pollution; oxbow lakes; phosphorus; plankton; pollutants; pollution control; riparian areas; sediment transport; sediment yield; sediments; water quality; Mississippi River; United States
- ... Agricultural lands are considered to be a major source of nonpoint source pollutants such as sediment, pesticides and nutrients in the United States. Conservation practices have been tested for their effectiveness in reducing agricultural related pollutants on smaller scales, but farm watershed scale assessments of these practices are limited and few of these have evaluated the impacts on downstre ...
- Delgado Jorge A.
- International soil and water conservation research 2020 v. no. pp. 407-414
- agricultural land; agricultural runoff; agricultural soils; agroecosystems; air pollution; ammonia; coarse-textured soils; cover crops; crop rotation; denitrification; environmental impact; fertilizer rates; greenhouse gas emissions; leaching; losses from soil; manure amendments; manure spreading; nitrate nitrogen; nitrates; nitrogen; nitrogen cycle; nitrogen fertilizers; nitrous oxide; nutrient availability; reactive nitrogen species; soil amendments; soil organic matter; soil profiles; soil texture; tile drainage; tillage; topographic slope; water pollution
- ... Nitrogen inputs were a key part of the green revolution in the past century and to this day remain a key tool for achieving national and global food security in the 21st century. Inputs of this key nutrient contribute to increased yields, product quality and profits for farmers and ranchers across the globe. However, when higher rates of nitrogen (N) inputs than needed are applied to agricultural ...