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Subjects corn Remove constraint corn: corn Subjects equations Remove constraint equations: equations Authors Clay, D.E. Remove constraint Clay, D.E.: Clay, D.E.

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1. Spatial distribution, temporal stability, and yield loss estimates for annual grasses and common ragweed (Ambrosia artimisiifolia) in a corn/soybean production field over nine years

Description:: Includes references
Author:: Clay, S.A. , Kreutner, B. , Clay, D.E. , Reese, C. , Kleinjan, J. , Forcella, F.
Subject:: Zea mays , corn , grain yield , annual weeds , grass weeds , Ambrosia artemisiifolia , broadleaf weeds , spatial distribution , temporal variation , long term experiments , plant density , equations , kriging , spatial data , geostatistics , precision agriculture , South Dakota
Collection:: Journal Articles, USDA Authors, Peer-Reviewed
Year:: 2006

2. Theoretical Derivation of Stable and Nonisotopic Approaches for Assessing Soil Organic Carbon Turnover

Description:: Includes references
Author:: Clay, D.E. , Carlson, C.G. , Clay, S.A. , Reese, C. , Liu, Z. , Chang, J. , Ellsbury, M.M.
Subject:: soil organic carbon , soil analysis , new methods , stable isotopes , carbon , equations , mathematical models , mineralization , crop residues , Zea mays , corn , Glycine max , soybeans , grain yield , crop yield
Collection:: Journal Articles, USDA Authors, Peer-Reviewed
Year:: 2006