The effect of dilution on soluble and exchangeable sodium in salt affected soil was studied. An attempt was made to establish quantitative relationship between soluble sodium fraction and dilution. In all the soil profiles, the relationship was found to be fairly linear. On dilution, the activities of soluble calcium and magnesium increased resulting in the displacement of exchangeable sodium and consequent decrease in ESP values. The results suggest that the 'velence-dilution principle could be used. successfully in the reclamation of salt affected soils.
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