SSSAJ Grow Your Career with SSSA
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Published in Soil Sci Soc Am J 45:273-277 (1981)
© 1981 Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Shainberg, I.
Right arrow Articles by Prather, R. J.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Shainberg, I.
Right arrow Articles by Prather, R. J.
Agricola
Right arrow Articles by Shainberg, I.
Right arrow Articles by Prather, R. J.

Effect of Low Electrolyte Concentration on Clay Dispersion and Hydraulic Conductivity of a Sodic Soil1

I. Shainberg, J. D. Rhoades and R. J. Prather2

ABSTRACT

The changes in hydraulic conductivity and clay dispersivity of a Fallbrook soil (fine-loamy, mixed, thermic Typic Haploxeralfs) as a function of concentration (<= 3 meq/liter) and Na adsorption ratio (<= 30) of the percolating solutions were measured. Both phenomena were very sensitive to the level of exchangeable Na and to salt concentration of the soil solution. When the salt concentration is 3.0 meq/liter, the hydraulic conductivity and clay dispersion decrease if the exchangeable sodium percentage (ESP) values exceed 12. Conversely, in distilled water, clay dispersion and hydraulic conductivity decrease at ESP values as low as 1 to 2%. We hypothesize that mineral soils, which readily release salt during leaching with distilled water, will not be susceptible to exchangeable Na < 10%. Conversely, mineral soils with low rates of mineral dissolution, like the Fallbrook soil, should be susceptible even at lower ESP values. Also, surface soils, when leached with rainwater, will be especially susceptible at such low levels of exchangeable Na.

NOTES

1 Contribution from USDA-SEA-AR, U.S. Salinity Laboratory, Riverside, CA 92501.

2 Visiting Soil Scientist and Soil Scientists, respectively. The permanent address of I. Shainberg is Institute of Soils & Water, ARO, The Volcani Center, Bet-Dagan, Israel.

Received for publication May 22, 1980. Accepted for publication October 20, 1980.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
The SCI Journals Agronomy Journal Crop Science
Vadose Zone Journal Journal of Plant Registrations
Journal of Natural Resources
and Life Sciences Education		 Journal of
Environmental Quality
Copyright © 1981 by the Soil Science Society of America.