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Subjects corn Remove constraint corn: corn Subjects accuracy Remove constraint accuracy: accuracy Subjects nitrogen Remove constraint nitrogen: nitrogen

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1. An Active Sensor Algorithm for Corn Nitrogen Recommendations Based on a Chlorophyll Meter Algorithm

Description:: Includes references
Author:: Solari, Fernando , Shanahan, John F. , Ferguson, Richard B. , Adamchuk, Viacheslav I.
Subject:: Zea mays , corn , nitrogen , plant nutrition , nutritional status , canopy , sensors , reflectance , algorithms , chlorophyll , nitrogen fertilizers , fertilizer rates , mathematical models , equations , nitrogen balance , accuracy , model validation , grain yield , irrigated farming
Collection:: Journal Articles, USDA Authors, Peer-Reviewed
Year:: 2010

2. Influence of animal manure application on the chemical structures of soil organic matter as investigated by advanced solid-state NMR and FT-IR spectroscopy

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

3. Optimization of Crop Canopy Sensor Placement for Measuring Nitrogen Status in Corn

Description:: Includes references
Author:: Roberts, Darrin F. , Adamchuk, Viacheslav I. , Shanahan, John F. , Ferguson, Richard B. , Schepers, James S.
Subject:: Zea mays , corn , canopy , spatial distribution , sensors , accuracy , nitrogen , plant nutrition , nutritional status , spatial variation , nitrogen fertilizers , variable rate application , chlorophyll
Collection:: Journal Articles, USDA Authors, Peer-Reviewed
Year:: 2009

4. Predicting Unsaturated Zone Nitrogen Mass Balances in Agricultural Settings of the United States

Description:: Includes references
Author:: Nolan, Bernard T. , Puckett, Larry J. , Ma, Liwang , Green, Christopher T. , Bayless, E. Randall , Malone, Robert W.
Subject:: Prunus dulcis , almonds , nut crops , Zea mays , corn , grain crops , Glycine max , soybeans , field crops , nitrogen , vadose zone , soil transport processes , biogeochemical cycles , orchards , simulation models , Root Zone Water Quality Model , soil hydraulic properties , soil depth , nutrient balance , nitrate nitrogen , accuracy , prediction , nitrogen fixation , nitrogen fertilizers , Nebraska , Maryland , California
Collection:: Journal Articles, USDA Authors, Peer-Reviewed
Year:: 2010