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United States Office of Experiment Stations. (17)
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Sharpley, A.N. (5)
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Beattie, W. R. (William Renwick) , b. 1870 (4)
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Kluthcouski, J. (4)
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Oliveira, I.P. de. (4)
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Power, J.F. (4)
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Aidar, H. (3)
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Darrow, George M. (George McMillan) , 1889- (3)
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Karlen, D.L. (3)
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Smith, D.R. (3)
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Displaying items
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179
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- Author:
- Miller, H. A. (Harry Alanson) , 1874-
- Subject:
- Cropping systems Middle Atlantic States , cropping systems , soil management , soil fertility , fertilizers , animal manures , cover crops , green manures , legumes , crop residues , crop residue management , plant cultural practices , case studies , crop rotation
- Physical description:
- 24 p. : ill., 1 map ; 23 cm.
- Additional Author(s):
- Miller, H. A. (Harry Alanson) , 1874-
- Collection:
- Organic Roots Collection
- Series:
- Farmers' bulletin
- Author:
- Weir, Wilbert Walter , 1882-
- Subject:
- Crop rotation , Soil productivity , crop rotation , fertilizers , yields , crop yield , crop production , soil productivity , long term experiments , research methods , land management , soil management
- Physical description:
- 68 p. : ill. ; 23 cm.
- Additional Author(s):
- Weir, Wilbert Walter , 1882-
- Collection:
- Organic Roots Collection
- Author:
- Rosen, Stacey , Shapouri, Shahla
- Subject:
- food security , food production , grain yield , Economic Research Service , investment , innovation adoption , agricultural policy , international economics , food prices , economic analysis , international trade , crop management , cultivars , fertilizers , nutrient management , small-scale farming , technology transfer , crop yield , Sub-Saharan Africa
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2010
- Description:
- Includes references
- Author:
- Liebig, M.A. , Varvel, G. , Doran, J.
- Subject:
- agriculture , ecosystems , environmental impact , farm management , crop management , methodology , Zea mays , fertilizers , Avena sativa , Trifolium pratense , Sorghum bicolor , Glycine max , crop rotation , Nebraska
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2001
- Author:
- Weir, Wilbert Walter, 1882 , USDA
- Subject:
- crop rotation , fertilizers , yields , crop yield , crop production , soil productivity , long term experiments , research methods , land management , soil management , Crop rotation. , Soil productivity.
- Physical description:
- 68 p.
- Collection:
- Organic Roots Collection
- Series:
- Bulletin of the U.S. Department of Agriculture.
- Part Of:
- Bulletin of the U.S. Department of Agriculture.
- Description:
- Includes references
- Author:
- Cole, C. Vernon , Flach, Klaus , Lee, Jeffrey , Sauerbeck, Dieter , Stewart, Bobby
- Subject:
- agricultural land , carbon sequestration , land use change , history , agroecosystems , agricultural soils , inventories , soil organic carbon , carbon dioxide , soil management , fertilizers , production costs , greenhouse gases , gas emissions , water quality , crop production , databases , soil nutrient balance , meta-analysis
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 1993
- Description:
- Includes references
- Author:
- Liefert, William M. , Gardner, Bruce , Serova, Eugenia
- Subject:
- fertilizers , grain crops , fertilizer application , fertilizer use reduction , mineral fertilizers , agricultural policy , commodity prices , cost analysis , econometric models , prices , wheat , exports , Russia
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2003
