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Authors
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Colvin, T.S. (5)[remove]
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Jaynes, D.B. (5)
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Karlen, D.L. (4)
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Cambardella, C.A. (2)
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Dinnes, D.L. (2)
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Kaspar, T.C. (2)
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Meek, D.W. (2)
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Fenton, T.E. (1)
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Hurburgh, C.R. (1)
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Martens, D.A. (1)
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- Description:
- Includes references
- Author:
- Karlen, D.L. , Dinnes, D.L. , Jaynes, D.B. , Hurburgh, C.R. , Cambardella, C.A. , Colvin, T.S. , Rippke, G.R.
- Subject:
- Zea mays , corn , grain crops , nitrogen fertilizers , soil fertility , nutrient management , nitrate nitrogen , drainage , losses from soil , fertilizer rates , crop models , fertilizer requirements , chlorophyll , plant nutrition , nutrient content , nitrates , grain yield , crop quality , Iowa
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2005
- Description:
- Includes references
- Author:
- Jaynes, D.B. , Colvin, T.S.
- Subject:
- Zea mays , corn , Glycine max , soybeans , crop production , crop yield , nitrogen fertilizers , application rate , application timing , seasonal variation , nitrates , leaching , water pollution , drainage water , subsurface drainage
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2006
- Description:
- Includes references
- Author:
- Kaspar, T.C. , Pulido, D.J. , Fenton, T.E. , Colvin, T.S. , Karlen, D.L. , Jaynes, D.B. , Meek, D.W.
- Subject:
- Zea mays , corn , Glycine max , soybeans , grain yield , agricultural soils , soil chemical properties , soil physical properties , soil fertility , spatial variation , topography , fields , landscapes , Iowa
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2004
- Description:
- Includes references
- Author:
- Martens, D.A. , Jaynes, D.B. , Colvin, T.S. , Kaspar, T.C. , Karlen, D.L.
- Subject:
- Zea mays , corn , Glycine max , soybeans , soil fertility , nitrogen , organic nitrogen compounds , crop rotation , grain yield , amino acids , galactosamine , soil test values , seasonal variation , ammonium nitrogen , soil water content , flooded conditions , soil microorganisms , glucosamine , ornithine , fertilizer requirements , nitrogen fertilizers , Iowa
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2006
- Description:
- Includes references
- Author:
- Jaynes, D.B. , Dinnes, D.L. , Meek, D.W. , Karlen, D.L. , Cambardella, C.A. , Colvin, T.S.
- Subject:
- watersheds , water pollution , pollution control , water quality , nitrate nitrogen , leaching , testing , tile drainage , surface water , chemical concentration , nitrogen fertilizers , fertilizer rates , application timing , Zea mays , corn , grain yield , statistical models , Iowa
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2004