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- Sharpley, Andrew H.; Beegle, Doug; Bolster, Carl; Good, Laura; Joern, Brad; Ketterings, Quirine; Lory, John; Mikkelsen, Rob; Osmond, Deanna; Vadas, Peter
- Journal of Environmental Quality 2012 v.41 no.6 pp. 1711
- Natural Resources Conservation Service; animal manure management; guidelines; hydrologic models; nutrient management; phosphorus; risk; risk estimate; soil analysis; standards and grades; surface water; water quality; United States
- ... Many states have invested significant resources to identify components of their Phosphorus (P) Index that reliably estimate the relative risk of P loss and incentivize conservation management. However, differences in management recommendations and manure application guidelines for similar field conditions among state P Indices, coupled with minimal reductions in the extent of P-impaired surface wa ...
- Sainju, Upendra M.; Stevens, William B.; Caesar-TonThat, Thecan; Liebig, Mark A.
- Journal of Environmental Quality 2012 v.41 no.6 pp. 1774
- Hordeum vulgare; Pisum sativum; barley; carbon dioxide; continuous cropping; conventional tillage; crop rotation; fertilizer application; global warming; greenhouse gas emissions; greenhouse gases; irrigation; malt; methane; nitrogen fertilizers; nitrous oxide; no-tillage; peas; sampling; sandy loam soils; soil temperature; North Dakota
- ... Management practices, such as irrigation, tillage, cropping system, and N fertilization, may influence soil greenhouse gas (GHG) emissions. We quantified the effects of irrigation, tillage, crop rotation, and N fertilization on soil CO(2), N(2)O, and CH(4) emissions from March to November, 2008 to 2011 in a Lihen sandy loam in western North Dakota. Treatments were two irrigation practices (irrigat ...