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Title: N MANAGEMENT AND HYPOXIA: A RESEARCH FOCUS OF THE USDA-ARS NATIONAL SOIL TILTH LABORATORY

Author
item Dinnes, Dana
item Jaynes, Dan
item Hatfield, Jerry
item Burkart, Michael
item Parkin, Timothy
item Cambardella, Cynthia
item Karlen, Douglas
item Colvin, Thomas
item Kaspar, Thomas
item James, David

Submitted to: Farm Bureau Members National Convention
Publication Type: Abstract Only
Publication Acceptance Date: 1/8/2001
Publication Date: 1/8/2001
Citation: Dinnes, D.L., Jaynes, D.B., Hatfield, J.L., Burkart, M.R., Parkin, T.B., Cambardella, C.A., Karlen, D.L., Colvin, T.S., Kaspar, T.C., James, D.E. 2001. N management and hypoxia: A research focus of the USDA-ARS National Soil Tilth Laboratory. Farm Bureau Members National Convention. American Farm Bureau Federation, Washington, D.C.

Interpretive Summary:

Technical Abstract: Nitrogen contamination of surface waters has been implicated as a major contributing factor to hypoxia in the Gulf of Mexico, which has focused scrutiny on agricultural use of N fertilizers in the Midwest. The National Soil Tilth Laboratory established a research agenda investigating the links between N management and N contamination of water resources. Featured research topics will be the following: rate and timing of N fertilizer application and its impact on water quality; soil-N mineralization dynamics; soil organic matter relationships; tile drainage biofilters; plant-soil N relationships; and GIS and remote sensing applications for tracking N needs, inputs and fates.