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Nitrate-nitrogen leached below the root zone during and following alfalfa

Journal Article · · J. Environ. Qual.; (United States)
OSTI ID:6424570
The nitrate-nitrogen contribution to subsurface drainage water by irrigated alfalfa in crop rotations was evaluated. The soil-water flux and nitrate-nitrogen concentration below the root zone of alfalfa and crops following alfalfa were measured. Results indicated that considerable dentrification and/or dilution takes place at the water table interface. The contribution by alfalfa in crop rotation was estimated to equal just half of that accounted for in the subsurface drainage. (3 graphs, 13 references)
Research Organization:
US Science and Education Admin, Ida
OSTI ID:
6424570
Journal Information:
J. Environ. Qual.; (United States), Journal Name: J. Environ. Qual.; (United States) Vol. 9:3; ISSN JEVQA
Country of Publication:
United States
Language:
English