Research Article
Sep 1978
Ground-Water Contamination by Fertilizer Nitrogen
Authors: Harold R. Duke, Dale F. Heermann, and Darryl E. SmikaAuthor Affiliations
Publication: Journal of the Irrigation and Drainage Division
Volume 104, Issue 3
Abstract
Nitrogen percolation beneath the crop root zone was significantly reduced by careful irrigation management using the USDA irrigation scheduling program. Deep percolation losses were measured directly using vacuum extractors. Analyses of both deep soil cores and water samples from piezometers suggest that significant amounts of percolating nitrate are removed by denitrification, either before or soon after reaching the water table, thus reducing the potential for ground-water contamination.
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Published In
Journal of the Irrigation and Drainage Division
Volume 104 • Issue 3 • September 1978
Pages: 283 - 291
Copyright
© 1978 American Society of Civil Engineers.
History
Published in print: Sep 1978
Published online: Feb 11, 2021
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Harold R. Duke
Agr. Engr., U.S. Dept. of Agriculture, Fort Collins, Colo.
Dale F. Heermann
Agr. Engr., U.S. Dept. of Agriculture, Fort Collins, Colo.
Darryl E. Smika
Soil Scientist, U.S. Dept. of Agriculture, Akron, Ohio
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.