Journal of FARM SCIENCES, Vol 36, No 3 (2023)

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Soil-site suitability assessment for major cereal crops in the Ganjigatti sub-watershed, Karnataka using remote sensing and geographic information systems

Manikyala Bhargava Narsimha Yadav, Patil P L, Hebbara M, Angadi S S, Meti C B

Abstract


Abstract: Land evaluation is the assessment of the suitability for specified land uses. Land evaluation and quantitative land use systems analysis support the planning of sustainable use of land. Twenty-one soil series and their phases (sixty-one) identified and mapped during land resource inventory were evaluated for their soil-site suitability for major cereal crops in Ganjigatti sub-watershed, Dharwad district in Hilly zone (zone 9) of Karnataka for sustainable land use planning. The soil series were AKT (Attikatti), ASR (Adavisomapura), BGD (Bagadgeri), BGH (Bigudihala), BNK (Bhogenagarkoppa), BTP (Bettadapura), GJG (Ganjigatti), HNL (Hirehonnalli), HRG (Harugeri), KDK (Kadanakoppa), KMD (Kamadhenu), KRK (Kuradikeri), MLP (Mahalingpur), MRK (Mishrikoti), MVD (Mevundi), RMN (Ramanhala), SDK (Sangedevarakoppa), SGL (Singtalur), SSK (Surashettykoppa), UGK (Ugginakeri) and YSJ (Yelisirunj). Based on texture, depth, slope, erosion, graveliness and stoniness, the twenty-one soil series were mapped into sixty-one mapping units by using Arc GIS version 10.8. The soils were evaluated for potential soil site suitability for major cereal crops viz., rice, wheat, maize, sorghum and pearl millet. Majority of soil mapping units are moderately (S2) and marginally suitable (S3) for cultivation due to moderate to severe limitations in climate, soil, drainage and slope per cent. The soil series BGD and MLP were currently not suitable due to very severe limitations of soil depth. These results could be used as baseline information for identifying specific soil resource constraints for sustainable production of these cereal crops in the study area.

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