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1984•Journal of the Indian Society of Soil ScienceOpen access

Clay Mineralogy of Soils of Sub-humid to Humid Regions of Rajasthan

S.C. Sazena, K. S. Singh

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Abstract

Four soil groups, namely hilly (Ustochrepts), yellowish brown (Haplustalfs), medium black (Chromusterts) and red loam (Haplustalfs) soils occuring in sub-humid to humid agroclimatic regions of Rajasthan were studied for the characterization of the clay minerals. Illite and montmorillonitic type of minerals were observed to constitute the major bulk of total clay of the soils of this region. Illite predominated the clay from hilly soils, whereas yellowish brown, medium black and red loam soils were found to be dominantly montmorillonitic.

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Four soil groups, namely hilly (Ustochrepts), yellowish brown (Haplustalfs), medium black (Chromusterts) and red loam (Haplustalfs) soils occuring in sub-humid to humid agroclimatic regions of Rajasthan were studied for the characterization of the clay minerals. Illite and montmorillonitic type of minerals were observed to constitute the major bulk of total clay of the soils of this region. Illite predominated the clay from hilly soils, whereas yellowish brown, medium black and red loam soils were found to be dominantly montmorillonitic.

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Available abstract

Four soil groups, namely hilly (Ustochrepts), yellowish brown (Haplustalfs), medium black (Chromusterts) and red loam (Haplustalfs) soils occuring in sub-humid to humid agroclimatic regions of Rajasthan were studied for the characterization of the clay minerals. Illite and montmorillonitic type of minerals were observed to constitute the major bulk of total clay of the soils of this region. Illite predominated the clay from hilly soils, whereas yellowish brown, medium black and red loam soils were found to be dominantly montmorillonitic.

Key concepts: Loam, Soil water, Illite, Clay minerals, Clay soil, Geology, Soil classification, Mineralogy

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