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Journal of Soil Science
ALPEROVITCH, N., Institute of Soils and Water, Volcani Center, Agricultural Research Organization, P.O.B. 6, Bet Dagan, Israel
SHAINBERG, I., Institute of Soils and Water, Volcani Center, Agricultural Research Organization, P.O.B. 6, Bet Dagan, Israel
KEREN, R., Institute of Soils and Water, Volcani Center, Agricultural Research Organization, P.O.B. 6, Bet Dagan, Israel
Exchangeable Mg does not have a specific effect on the hydraulic conductivity (HC) and clay dispersion in calcareous soils. Conversely, in well‐weathered soils, which do not contain CaCO3, a specific effect of exchangeable Mg is evident, on both HC losses and clay dispersion, when the Na/Mg soils are leached with distilled water (simulating rain water). Soil clays, when Mg‐saturated, are chemically more stable and do not release electrolytes into the solutions: they thus disperse more easily when leached with distilled water. The presence of exchangeable Mg enhances the dissolution of CaCO3 in calcareous soils, and the electrolytes prevent the dispersion of the clay and HC losses in the Na/Mg calcareous soils. Copyright © 1981, Wiley Blackwell. All rights reserved
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הספר "אוצר וולקני"
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תנאי שימוש
SPECIFIC EFFECT OF MAGNESIUM ON THE HYDRAULIC CONDUCTIVITY OF SODIC SOILS
32
ALPEROVITCH, N., Institute of Soils and Water, Volcani Center, Agricultural Research Organization, P.O.B. 6, Bet Dagan, Israel
SHAINBERG, I., Institute of Soils and Water, Volcani Center, Agricultural Research Organization, P.O.B. 6, Bet Dagan, Israel
KEREN, R., Institute of Soils and Water, Volcani Center, Agricultural Research Organization, P.O.B. 6, Bet Dagan, Israel
SPECIFIC EFFECT OF MAGNESIUM ON THE HYDRAULIC CONDUCTIVITY OF SODIC SOILS
Exchangeable Mg does not have a specific effect on the hydraulic conductivity (HC) and clay dispersion in calcareous soils. Conversely, in well‐weathered soils, which do not contain CaCO3, a specific effect of exchangeable Mg is evident, on both HC losses and clay dispersion, when the Na/Mg soils are leached with distilled water (simulating rain water). Soil clays, when Mg‐saturated, are chemically more stable and do not release electrolytes into the solutions: they thus disperse more easily when leached with distilled water. The presence of exchangeable Mg enhances the dissolution of CaCO3 in calcareous soils, and the electrolytes prevent the dispersion of the clay and HC losses in the Na/Mg calcareous soils. Copyright © 1981, Wiley Blackwell. All rights reserved
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