Search National Agricultural Library Digital Collections
Displaying
all 9 items
start over
- Description:
- Includes references
- Author:
- Chang, J.Y. , Clay, D.E. , Carlson, C.G. , Reese, C.L. , Clay, S.A. , Ellsbury, M.M.
- Subject:
- precision agriculture , Glycine max , soybeans , Zea mays , corn , crop rotation , grain yield , geographic information systems , fields , agricultural soils , electrical conductivity , soil fertility , fertilizer requirements , phosphorus , phosphorus fertilizers , nitrogen , nitrogen fertilizers , fertilizer application , topography , landscapes , South Dakota
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2004
- Description:
- Includes references
- Author:
- Kleinman, P.J.A. , Salon, P. , Sharpley, A.N. , Saporito, L.S.
- Subject:
- phosphorus , agricultural runoff , water erosion , agricultural soils , losses from soil , Zea mays , corn , cover crops , Lolium perenne , Trifolium repens , Trifolium pratense , Medicago sativa , sowing , plant establishment , crop yield , dairy manure , fertilizer application , New York
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2005
- Description:
- Paper presented at the 2005 ASAE Annual International Meeting, held July 17-20, 2005, Tampa, Florida.
- Author:
- Gowda, P.H. , Mulla, D.J. , Larson, W.E. , American Society of Agricultural Engineers.
- Subject:
- precision agriculture , fertilizer application , phosphorus fertilizers , variable rate application , Zea mays , corn , fertilizer rates , agricultural soils , soil pH , soil fertility , soil nutrients , phosphorus , soil heterogeneity , losses from soil , sediment yield , agricultural runoff , leaching , tile drainage , agricultural management models , Minnesota
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2005
- Description:
- Includes references
- Author:
- Saporito, L.S. , Lanyon, L.E.
- Subject:
- soil nutrient balance , soil nutrients , soil fertility , phosphorus , potassium , spatial variation , temporal variation , input output analysis , crop production , dairy farming , farms , Zea mays , corn , Medicago sativa , Phleum pratense , Phalaris arundinacea , agricultural soils , Pennsylvania
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2004
- Description:
- Includes references
- Author:
- Mao, Jingdong , Olk, Dan C. , Fang, Xiaowen , He, Zhongqi , Schmidt-Rohr, Klaus
- Subject:
- soil organic matter , humic acids , humates , chemical structure , cattle manure , mineral fertilizers , fertilizer application , agricultural soils , peptides , nuclear magnetic resonance spectroscopy , Fourier transform infrared spectroscopy , soil biochemistry , Zea mays , corn , crop yield , nitrogen , phosphorus , spectral analysis , accuracy
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2008
- Description:
- Includes references
- Author:
- Gilley, J.E. , Sabatka, W.F. , Eghball, B. , Marx, D.B.
- Subject:
- overland flow , phosphorus , nitrate nitrogen , ammonium nitrogen , nitrogen , sediment yield , losses from soil , water erosion , agricultural soils , agricultural runoff , rainfall simulation , no-tillage , discing , cattle manure , pig manure , soil amendments , crop residues , Zea mays , corn , Nebraska
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2008
- Description:
- Includes references
- Author:
- Gilley, J.E. , Eghball, B. , Wienhold, B.J. , Miller, P.S.
- Subject:
- pig manure , manure spreading , agricultural soils , sandy loam soils , silt loam soils , clay soils , nitrogen , phosphorus , losses from soil , agricultural runoff , interrill erosion , animal manure management , nutrient management , swine feeding , corn , silty clay soils
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2001
- Description:
- Includes references
- Author:
- Paschold, J.S. , Wienhold, B.J. , Ferguson, R.B. , McCallister, D.L.
- Subject:
- agricultural soils , nutrient availability , nitrogen , phosphorus , pig manure , fertilizer application , corn , Zea mays , phytic acid , diet , Sus scrofa , swine
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2008
- Description:
- Includes references
- Author:
- Bauer, Philip J. , Frederick, James R. , Busscher, Warren J. , Novak, Jeff M. , Fortnum, Bruce A.
- Subject:
- conservation tillage , subsoiling , tillage implements , agricultural soils , coastal plain soils , sampling , fields , spatial variation , soil pH , phosphorus , potassium , soil nutrients , soil fertility , crop rotation , Zea mays , corn , Gossypium hirsutum , cotton , liming , South Carolina
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2008
