Land Resources Characterization of Kangayam Block in Tamil Nadu Uplands under Dry Semiarid Eco-region

Not AvailableA detailed soil survey was carried out to characterize and classify the soil resources of Kangayam block, Tiruppur district represented by hot dry semiarid eco-region of Tamil Nadu uplands (AESR, 8.1). Seven landform assemblages viz. isolated structural hills and ridges, local rises, upper sectors of pediplains, middle sectors of pediplains, lower sectors of pediplains, valley fringes, and the Noyyal- Amaravathi river valley floor, were identified. Typifying pedons of twelve soil series identified were analyzed for physical and chemical properties for their characterization and classification. The soils were shallow and moderately deep, well to moderately well-drained, developed from granite-gneiss and its colluvial and alluvial parent material. The sand, silt, and clay content of the soils varied from 11.2 to 88.2, 2.3 to 49.4, and 6.7 to 39.4 per cent, respectively. The soils were slightly acid to strongly alkaline (6.23 to 8.92) and non-saline (0.03 to 0.85 dS m-1). Soil organic carbon content varied from 0.09 to 0.86 per cent and the soil calcium carbonate equivalent was in appreciable quantities in sub-soils (maximum of 38.5%). The soil cation exchange capacity varied from 2.5 to 38.8 cmol (p+) kg-1. The soils were classified under Alfisols, Entisols, and Inceptisols soil orders as per USDA Soil Taxonomy.Not Availabl