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1. A mechanistic treatment of the dominant soil nitrogen cycling processes: model development, testing, and application

Description:
Includes references
Author:
Maggi, F. , Gu, C. , Riley, W.J. , Hornberger, G.M. , Venterea, R.T. , Xu, T. , Spycher, N. , Steefel, C. , Miller, N.L. , Oldenburg, C.M.
Subject:
nitrogen , biogeochemical cycles , agricultural soils , gas emissions , losses from soil , leaching , nitrogen fertilizers , fertilizer application , anhydrous ammonia , nitrate nitrogen , nitrites , irrigation rates , nitrification , denitrification , soil bacteria , irrigation , simulation models , mathematical models , model validation , denitrifying bacteria , California
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2008

2. Do Synergistic Relationships between Nitrogen and Water Influence the Ability of Corn to Use Nitrogen Derived from Fertilizer and Soil?

Description:
Includes references
Author:
Kim, K.I. , Clay, D.E. , Carlson, C.G. , Clay, S.A. , Trooien, T.
Subject:
Zea mays , corn , synergism , nitrogen , plant available water , nutrient use efficiency , nitrogen fertilizers , nutrient uptake , soil fertility , soil water content , fertilizer rates , urea , evapotranspiration , plant growth , mathematical models , South Dakota
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2008

3. Evaluating Multiple Indices from a Canopy Reflectance Sensor to Estimate Corn N Requirements

Description:
Includes references
Author:
Sripada, Ravi P. , Schmidt, John P. , Dellinger, Adam E. , Beegle, Douglas B.
Subject:
Zea mays , corn , nitrogen , plant nutrition , nutrient requirements , canopy , reflectance , remote sensing , nitrogen fertilizers , economic analysis , fertilizer rates , field experimentation , application timing , color , grain yield , mathematical models , equations , Pennsylvania
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2008

4. Impact of Fuel and Nitrogen Prices on Profitability of Selected Crops: A Case Study

Description:
Includes references
Author:
Skalsky, S.A. , Jacobs, J.J. , Menkhaus, D.J. , Stevens, W.B.
Subject:
Zea mays , corn , Hordeum vulgare , malting barley , Beta vulgaris , sugar beet , case studies , Phaseolus vulgaris , beans , fuels , nitrogen fertilizers , input prices , economic analysis , profitability , decision making , farm management , nutrient use efficiency , cost analysis , crop yield , mathematical models , econometric models , crop rotation
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2008

5. Productivity, Oil Content, and Oil Composition of Sweet Basil as a Function of Nitrogen and Sulfur Fertilization

Description:
Includes references
Author:
Zheljazkov, V.D. , Cantrell, C.L. , Ebelhar, M.W. , Rowe, D.E. , Coker, C.
Subject:
Ocimum basilicum , basil , crop yield , essential oils , chemical constituents of plants , nitrogen fertilizers , sulfur fertilizers , fertilizer rates , geographical variation , field experimentation , dry matter accumulation , chemical composition , equations , mathematical models , Mississippi
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2008

6. Summer cover crop impacts on soil percolation and nitrogen leaching from a winter corn field

Description:
Includes references
Author:
Muñoz-Carpena, R. , Ritter, A. , Bosch, D.D. , Schaffer, B. , Potter, T.L.
Subject:
Crotalaria juncea , cover crops , nitrogen , leaching , infiltration (hydrology) , Zea mays , corn , vadose zone , soil water content , soil water balance , soil nutrient balance , nitrogen fertilizers , fertilizer application , groundwater contamination , drainage , prediction , mathematical models , Florida
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2008