Swelling of Gezira vertisol series in relation to some of their physical and chemical characteristics
2005
Ishag, A.(Ministry of Science and Technology, Khartoum (Sudan). Agricultural Research Corporation) | Mustafa, M.A.(University of Khartoum, Shambat (Sudan). Faculty of Agriculture. Dept. of Soil Science)
The coefficients of linear extensibility for ninety-nine soil samples, collected from fifteen Gezira Vertisols series, were measured using the standard clod method (COLEst) and a rod method (COLErd). McNeal's demixed-ion model was used for the prediction of interlayer swelling (IS) of these soils. Regression analysis showed highly significant (P 0.001) increase in COLEst with increase in clay content (r
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