Nitrate Concentrations in the Unsaturated Zone Beneath Irrigated Fields in Southern California
- 1 March 1973
- journal article
- Published by Wiley in Soil Science Society of America Journal
- Vol. 37 (2) , 321-322
- https://doi.org/10.2136/sssaj1973.03615995003700020043x
Abstract
Nitrate concentrations in the drainage water of the unsaturated zone beneath the soil‐root zone were predicted from data for N inputs, N removal in harvested crops, and the drainage volume. Ratios of these predicted values to measured values were related to the volatilization losses or unaccounted‐for inputs expressed as a fraction of the excess N defined as the N input minus N removal in harvested crops. Volatilization losses or unaccounted‐for inputs were calculated as known inputs minus removal in harvested crops minus that removed from the soil‐root system by leaching.Keywords
Funding Information
- National Science Foundation (GI‐34733X)
- Environmental Protection Agency (16060 DOE)
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