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

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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. 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

3. 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

4. Urea Decreases Nitrous Oxide Emissions Compared with Anhydrous Ammonia in a Minnesota Corn Cropping System

Description:: In the special section: Soil carbon sequestration and greenhouse gas mitigation / edited by Ronald F. Follett.
Author:: Venterea, Rodney T. , Dolan, Michael S. , Ochsner, Tyson E.
Subject:: Zea mays , corn , grain crops , urea , anhydrous ammonia , nitrogen fertilizers , fertilizer rates , nitrous oxide , gas emissions , greenhouse gases , long term experiments , Glycine max , soybeans , field crops , crop rotation , continuous cropping , carbon dioxide , crop residues , measurement , accuracy , equations , mathematical models , Minnesota
Collection:: Journal Articles, USDA Authors, Peer-Reviewed
Year:: 2010