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Nitrate concentrations in the unsaturated zone beneath some selected row-crop fields

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Authors

D. C. Adriano, Department of Plant Sciences, University of California, Riverside
P. F. Pratt, Department of Plant Sciences, University of California, Riverside
F. H. Takatori, Department of Plant Sciences, University of California, Riverside
K. M. Holtzclaw, Department of Plant Sciences, University of California, Riverside
J. B. Johanson, Department of Soil Science and Agricultural Engineering, University of California, Riverside

Publication Information

California Agriculture 26(2):8-10.

Published February 01, 1972

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Abstract

Today's nitrogen fertilization practices for row-crop production (especially vegetables) in the Santa Ana Drainage Basin leave various amounts of NO3-N in drainage water. In nine sites selected for this study, the average NO3-N concentrations in the drainage water in the unsaturated zone (that portion of the soil profile from the root systems to the 50-ft depth or water table) were all above the 10 ppm NO3-N public standard for drinking water. Six sites had average NO3-N concentrations more than five times greater than this standard, whereas, two sites had NO3-N concentrations more than 10 times greater. The amount of NO3-N in drainage water was affected by N inputs, removal of N when crops are harvested, drainage volume, and gains and losses of NO3.

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Nitrate concentrations in the unsaturated zone beneath some selected row-crop fields

D. C. Adriano, P. F. Pratt, F. H. Takatori, K. M. Holtzclaw, J. B. Johanson
Webmaster Email: wsuckow@ucanr.edu

Nitrate concentrations in the unsaturated zone beneath some selected row-crop fields

Share using any of the popular social networks Share by sending an email Print article
Share using any of the popular social networks Share by sending an email Print article

Authors

D. C. Adriano, Department of Plant Sciences, University of California, Riverside
P. F. Pratt, Department of Plant Sciences, University of California, Riverside
F. H. Takatori, Department of Plant Sciences, University of California, Riverside
K. M. Holtzclaw, Department of Plant Sciences, University of California, Riverside
J. B. Johanson, Department of Soil Science and Agricultural Engineering, University of California, Riverside

Publication Information

California Agriculture 26(2):8-10.

Published February 01, 1972

PDF  |  Citation  |  Permissions

Author Affiliations show

Abstract

Today's nitrogen fertilization practices for row-crop production (especially vegetables) in the Santa Ana Drainage Basin leave various amounts of NO3-N in drainage water. In nine sites selected for this study, the average NO3-N concentrations in the drainage water in the unsaturated zone (that portion of the soil profile from the root systems to the 50-ft depth or water table) were all above the 10 ppm NO3-N public standard for drinking water. Six sites had average NO3-N concentrations more than five times greater than this standard, whereas, two sites had NO3-N concentrations more than 10 times greater. The amount of NO3-N in drainage water was affected by N inputs, removal of N when crops are harvested, drainage volume, and gains and losses of NO3.

Full text

Full text is available in PDF.

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