Author(s):

KS Prathibha, Manjunatha Hebbara, PL Patil and MC Anjali

Abstract: The Kavalur-1 micro-watershed of Koppal district, Karnataka was systematically surveyed using satellite imagery (IRS P6 LISS-IV), cadastral map and topo-sheet. Eighteen typical soil pedons representing varied physiographic features were identified and examined for their morphological features. Among them, eight (Pedon 1, 3, 4, 5, 9, 12, 13 and 18) and 10 (pedon 2, 6, 7, 8, 10, 11, 14, 15, 16 and 17) soil pedons represented respectively, the black and red soil areas. The detailed morphological descriptions of the pedons were done in the field as per the procedure outlined in Soil Survey Manual. The results revealed that the pedons were deep (100 - 150 cm) to very deep (>180) and varied in colour from reddish brown (2.5 YR 4/4) to dark reddish brown (5 YR 3/4) in case of red soils and dark grayish brown (10 YR 4/2)) to brown (10 YR 5/3) in case of black soils. Soil texture varied from sandy clay loam to clay and showed weak to moderate sub-angular structure. Consistence of soil pedons varied from slightly hard to very hard when dry, very friable to firm when moist, slightly sticky to very sticky and slightly plastic to very plastic when wet. Taxonomically, the soils of the study area were classified under the orders Alfisols, Inceptisols and Vertisols.

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