Abstract

The soluble chloride salts in soils may be divided into two parts, one which is freely soluble even at low moisture contents and may be extracted by a suitable anhydrous solvent, and a second which becomes soluble only when ample moisture is present. The chloride retained in the less soluble form may be estimated by the difference between the chloride extracted from a dry soil sample by an anhydrous mixture of 90% ethanol and 10% ethylene glycol and that extracted by an aqueous solvent, 17% glycerol with 83% water. This technique could be used to identify weakly and strongly salt-retentive soils, and to follow changes in salt retention caused by various types of land use.

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