HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Dyer, K. L. Search for Related Content PubMed Articles by Dyer, K. L. Agricola Articles by Dyer, K. L.

Unsaturated Flow Phenomena in Panoche Sandy Clay Loam as Indicated by Leaching of Chloride and Nitrate Ions¹

ABSTRACT

Moisture suctions greater than 15 atmospheres are a common occurrence in the subsoils and substrata underlying unirrigated soils of the Panoche series. One such soil which contained appreciable quantities of Cl^- and NO₃^- was taken from the field at a moisture suction of 16 atmospheres and packed into a column measuring 117 inches in height. This column was partially leached under unsaturated flow conditions with a saturated gypsum solution. Subsequent analyses indicated that about half the original soil moisture was not displaced downward with the dissolved Cl^- and NO₃^-. The Cl^- and NO₃^- concentrations contained in the displaced portion of the soil solution were about double those in the original soil solution existing at 16 atmospheres suction.

¹ Contribution from the Southwest Branch. Soil and Water Conservation Research Division. ARS, USDA, in cooperation with the California Department of Water Resources.

² Soil Scientist (Chemistry), Fresno Field Station, Fresno, Calif.

Received for publication June 29, 1964. Accepted for publication September 30, 1964.