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Journal Articles, USDA Authors, Peer-Reviewed (1,314)[remove]
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- Description:
- Includes references
- Author:
- Rotz, C.A. , Buckmaster, D.R. , Comerford, J.W.
- Subject:
- beef cows , simulation models , feed intake , animal performance , cattle manure , excretion , cattle production , cattle feeding , dietary fiber , energy requirements , protein requirement , finishing , calves , heifers , stocker cattle , environmental impact , dietary minerals , animal growth , nitrogen , potassium , phosphorus , particle size distribution , model validation , integrated agricultural systems
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2005
- Description:
- Includes references
- Author:
- Olk, D.C.
- Subject:
- soil nutrient dynamics , soil organic matter , biogeochemical cycles , fractionation , soil chemistry , extraction , land use change , humic acids , humates , nitrogen , mineralization , tropical soils , cropping systems , nutrient uptake , potassium , flooded conditions , rice , cotton , phenolic compounds , soil chemical properties , cations , case studies , literature reviews
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2006
- Description:
- Includes references
- Author:
- Lory, J.A. , Russelle, M.P. , Randall, G.W.
- Subject:
- Zea mays , continuous cropping , crop rotation , nitrogen fertilizers , crop yield , edaphic factors , temporal variation , dry matter accumulation , soil fertility , nitrogen , application rate , fertilizer requirements , cropping sequence , Minnesota
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 1995
- Description:
- Includes references
- Author:
- Bauer, P.J. , Reeves, D.W.
- Subject:
- Gossypium hirsutum , Avena nuda , Secale cereale , Triticum aestivum , Avena sativa , Raphanus sativus , cover crops , ground cover plants , planting date , nitrogen , nutritional status , lint cotton , crop yield , field experimentation , crop residues , roots , cold tolerance , nitrogen content , plant density , species differences , biomass production , South Carolina
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 1999
- Description:
- Includes references
- Author:
- Narasimhan, B. , Srinivasan, R. , Bednarz, S.T. , Ernst, M.R. , Allen, P.M.
- Subject:
- reservoirs , water quality , surface water , water pollution , nonpoint source pollution , Soil and Water Assessment Tool model , eutrophication , nitrogen , phosphorus , pollution load , environmental models , stream channels , stream erosion , watershed management , Texas
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2010
- Description:
- Paper presented at the Organization for Economic Cooperation and Development (OECD) sponsored conference on "Practical and Innovative Measures for the Control of Agricultural Phosphorus Losses to Water," held June 16-19, 1998, Antrim, Northern Ireland.
- Author:
- Heathwaite, L. , Sharpley, A. , Gburek, W.
- Subject:
- phosphorus , nitrogen , losses from soil , watershed management , nutrient management , best management practices
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2000
- Description:
- Includes references
- Author:
- Rotz, C.A. , Mertens, D.R. , Buckmaster, D.R. , Allen, M.S. , Harrison, J.H.
- Subject:
- dairy herds , simulation models , dairy farming , energy intake , energy requirements , feed rations , lactation , heifers , calves , feed intake , milk yield , cattle manure , excretion , nitrogen , phosphorus , potassium , crude protein , protein content , nutrient intake , nutrient availability , particle size distribution , rumen fermentation , dietary fiber , feces composition
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 1999
- Description:
- Includes references
- Author:
- Olness, A.
- Subject:
- soil pH , nitrogen , mineralization , nitrate nitrogen , mathematical models , agricultural soils , Zea mays , fertilizer application , silt loam soils , hydroxides , hydrogen , ions , nitrates , chemical concentration , soil chemistry , Midwestern United States
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 1999
- Description:
- Includes references
- Author:
- Hubbard, R.K. , Newton, G.L. , Ruter, J.M.
- Subject:
- pig manure , waste lagoons , effluents , land application , filter strips , vegetation , grasses , Pinus , pollution control , nitrogen , nutrient uptake , slope , overland flow , nitrate nitrogen , water pollution , groundwater contamination , Georgia
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2007
- Description:
- Includes references
- Author:
- Martin, M.E. , Plourde, L.C. , Ollinger, S.V. , Smith, M.L. , McNeil, B.E.
- Subject:
- forest canopy , hyperspectral imagery , remote sensing , leaves , nitrogen , image analysis , algorithms , spatial data , detection , geographical distribution , data analysis , calibration , forest ecosystems , latitude , gas emissions
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2008
