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The effect of lime on the response of soils to sodic conditions
Author(s) -
SHAINBERG I.,
GAL M.
Publication year - 1982
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1982.tb01783.x
Subject(s) - lime , soil water , calcareous , dispersion (optics) , distilled water , dissolution , hydraulic conductivity , soil science , chemistry , environmental science , geology , materials science , metallurgy , physics , chromatography , optics , paleontology
Summary The role of CaC0 3 in preventing clay dispersion and losses in hydraulic conductivity (HC) of sodic soils was determined directly by mixing two lime‐free soils with 0.5 and 2.0 per cent CaCO 3 . Whereas the HC of the lime‐free soils dropped sharply when 0.01 n solutions of SAR 20 were displaced with distilled water, mixing the soils with powdered lime prevented both HC losses and clay dispersion. The response of a sandy soil mixed with lime was similar to that of a calcareous sandy soil. The beneficial effect ofCaC0 3 was not so pronounced in soils equilibrated with solutions of SAR 30. The increase in electrolyte concentration, due to CaCO 3 dissolution, was suggested as the mechanism responsible for the beneficial effect of lime.