Assessment of land suitability potentials for agriculture in Koranahalli subwatershed using remote sensing & GIS

Abstract

A study of land resource assessment using remote sensing and GIS techniques was taken up in Koranahalli subwatershed of Chikkamagaluru district of Karnataka for sustainable agriculture. 14 series were identified after detailed soil survey based on the soil characteristics. About 150 soil mapping units were grouped into good and moderate and fairly good cultivable land. Soil site suitability evaluation for different crops revealed that, about 32.95 per cent of area is highly suitable for field bean, followed by 55.94, 35.20, 34.89, 33.74 and 33.60 per cent of area is moderately suitable for groundnut, chickpea, ragi, soybean and pomegranate respectively. About 37.44, 36.52, 30.24, 30.07 and 29.76 per cent of area is suitable for cultivating tomato or brinjal, banana, soybean, ragi and sorghum or chickpea. However, 5.89 per cent of the area is not suitable for cultivating pomegranate or banana due to the limitation of soil depth and gravelliness or stoniness.