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Soil Science Society of America Journal Abstract -

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


This article in SSSAJ

  1. Vol. 29 No. 2, p. 121-126
    Received: June 29, 1964
    Accepted: Sept 30, 1964

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  1. Kenneth L. Dyer2



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.

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