Premium
Interpretation of Chloride and Nitrate Ion Distribution Patterns in Adjacent Irrigated and Nonirrigated Panoche Soils
Author(s) -
Dyer Kenneth L.
Publication year - 1965
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1965.03615995002900020018x
Subject(s) - soil water , evapotranspiration , irrigation , environmental science , hydrology (agriculture) , water table , soil science , soil salinity , nitrate , moisture , agronomy , groundwater , chemistry , geology , ecology , geotechnical engineering , organic chemistry , biology
Salt profiles of sprinkler‐irrigated soils, with known crop histories, were compared with those of adjacent soils which had not been irrigated. The methods described offer, for some areas, new techniques for estimating salt movements toward the water table and for evaluating past performance of irrigation projects. Theoretical concentration curves obtained using van der Molen's application of the Glueckauf theory of chromatography were successfully fitted to CI ‐ and NO 3 ‐ concentration curves found in soils being leached under field conditions. The accumulation of Cl ‐ in the soil profile was used in conjunction with Cl ‐ concentration in the soil solution to obtain an independent estimate of moisture dissipated by evapotranspiration. Evapotranspiration losses of sprinkler applied irrigation water were estimated by this method to range from 78 to 85% in the soils under investigation. Estimates of total applied irrigation water calculated from the accumulation of Cl ‐ in the soil profile were in general agreement with estimates made from crop history.