Quality of percolating waters: II. A computer method for predicting salt concentrations in soils at variable moisture contents
AuthorsK. K. Tanji
G. R. Dutt
J. L. Paul
L. D. Doneen
Authors AffiliationsK. K. Tanji was Laboratory Technician IV, Department of Water Science and Engineering, Davis; G. R. Dutt was formerly Assistant Research Irrigationist, Davis. He is now Associate Professor, Department of Agricultural Chemistry and Soils, University of Arizona, Tucson; J. L. Paul was Assistant Professor of Landscape Horticulture, and Assistant Horticulturist in the Experiment Station, Davis; L. D. Doneen was Professor of Water Science, and Irrigationist in the Experiment Station, Davis.
Hilgardia 38(9):307-318. DOI:10.3733/hilg.v38n09p307. June 1967.
The San Luis Project, a major new unit in the Central Valley Project, is currently under construction. It will transport Feather River water to the west side of the San Joaquin Valley. The State of California Water Plan envisions a program of cyclic use of ground water during periods of deficiency, and storage of excess surface water when supplies are plentiful. Recharge of underground storage basins will involve the percolation of water through substrata, and the quality of the percolating water will be influenced by salts present in the substrata.
A series of papers in this issue present a method of predicting the quality of percolating waters in substrata (Part III), utilizing field data obtained from substrata profiles in the west side of the San Joaquin Valley (Part I). Theoretical considerations and approximations (Parts II and III) are formulated in the computer programs, for calculating simultaneously the major physicochemical reactions that occur during recharge.
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Also in this issue:The doctor of plant health
Sodium bicarbonate buffer in dairy cow rations
Changing patterns in California's harvest labor force
Desiccants for grapevines
Adaptability of tropical forages to California's Central Valley
3X milking: Its effects on production and profitability
Effect of vitamin B on vegetable transplants
Coping with the ‘leafminer crisis’
Beet armyworm pheromone trap
Aerial movements of mites in almonds: Implications for pest management
Efficacy of cotton defoliants
Why workers leave dairies
Improved sampling for spider mites on Imperial Valley cotton
Presence-absence sampling of citrus red mite on lemons
Quality of percolating waters: I. Properties of deep substrata materials in the west side of the San Joaquin Valley, California
Quality of percolating waters: III. The quality of waters percolating through stratified substrata, as predicted by computer analyses