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Journal of the Indian Society of Soil Science
Year : 1995, Volume : 43, Issue : 1
First page : ( 99) Last page : ( 103)
Print ISSN : 0019-638X.

Characterization and Classification of Soils on Valley Plains of Middle Andaman Island

Sahu G.C., Bala Nirmalya

Department of Agricultural Chemistry, Soil Science and Biochemistry; Orissa University of Agriculture and Technology, Bhubaneswar, Orissa, 751003.

Received:  May,  1993; Accepted:  December,  1994.

Abstract

Five pedons of valley plains of Middle Andaman Islands were characterized arid classified. Three pedons situated in valley flat plains had mottles, loam to sandy clay texture with slow permeability and were moderately acidic to neutral. Two pedons just adjacent to the valley plains on slightly sloping land and in brackish water marshes were sandy loam to loam in texture with moderate permeability and strongly to mildly acidic. In all these soils organic carbon content was generally high in the surface (0.37–0.06 g kg−1) and gradually decreased with depth. Exchange acidity was mostly due to exchangeable H+. The CEC varied from 23.0 to 8.4 cm of (p+) kg−1 and Ca2+ dominated the exchange complex. Soils of valley plains were classified as Fluventic Entropepts, Aquic Eutropepts and A eric Tropaquepts. The other two soils were classified as Typic Udifluvents.

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Keywords

Valley plain soils, morphology, physical and chemical characteristics, taxonomic classification.

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