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Not AvailableThe land resource inventory of Sambar-2 microwatershed was conducted using village cadastral maps and IRS satellite imagery on 1:7920 scale. The false colour composites of IRS imagery were interpreted for physiography and these physiographic delineations were used as base for mapping soils. The soils were studied in several transects and a soil map was prepared with phases of soil series as mapping units. Random checks were made all over the area outside the transects to confirm and validate the soil map unit boundaries. The soil map shows the geographic distribution and extent, characteristics, classification, behaviour and use potentials of the soils in the microwatershed. The present study covers an area of 530 ha in Sambar-2 microwatershed in Yadgir taluk and district, Karnataka. The climate is semiarid and categorized as droughtprone with an average annual rainfall of 866 mm, of which about 652 mm is received during south–west monsoon, 138 mm during north-east and the remaining 76 mm during the rest of the year. An area of about 99 per cent is covered by soils and less than one per cent by others (water body). The salient findings from the land resource inventory are summarized briefly below. The soils belong to 10 soil series and 12 soil phases (management units) and 7 land management units. The length of crop growing period is about 120-150 days starting from the 1st week of June to 4th week of October. From the master soil map, several interpretative and thematic maps like land capability, soil depth, surface soil texture, soil gravelliness, available water capacity, soil slope and soil erosion were generated. Soil fertility status maps for macro and micronutrients were generated based on the surface soil samples collected at every 250 m grid interval. Land suitability for growing 26 major agricultural and horticultural crops were assessed and maps showing the degree of suitability along with constraints were generated. Entire land area of the microwatershed is suitable for agriculture. An area of about 12 per cent soils are moderately shallow (50-75 cm), 15 per cent of the soils are moderately deep (75-100cm) and about 73 per cent soils are deep (100-150cm) to very deep (>150 cm) soils. About 20 per cent of the area has clayey soils, 44 per cent loamy soils and 36 per cent sandy soils at the surface. An area of about 99 per cent has non-gravelly and <1 per cent are gravelly. About 30 per cent of the area has soils that are very high (>200mm/m) in available water capacity, 50 per cent is medium (101-150 mm/m), 15 per cent low (51-100mm/m) and about 5 per cent very low (<50 mm/m). Maximum area of 99 per cent in the microwatershed has very gently sloping (1-3%) lands and 1 per of nearly level (0-1%) lands. Small area of about 1 per cent has soils that are slightly eroded (e1), 99 per cent is moderately eroded (e2) and <1 per cent is severely eroded. An area of about 36 per cent is neutral (pH 6.5-7.3), 28 per cent is slightly alkaline (pH 7.3-7.8), 33 per cent soils that are moderately alkaline (pH 7.8 to 8.4) and about 1 per cent soils that are strongly alkaline (pH 8.4 – 9.0) in soil reaction. The Electrical Conductivity (EC) of the soils are dominantly <2 dsm- 1indicating that the soils are non-saline. About <1 per cent is low (<0.5%), 53 per cent medium (0.5-0.75%) and 46 per cent high (>0.75%) in organic carbon. An area of 44 per cent has soils that are low (<23 kg/ha), 46 per cent medium (23-57 kg/ha) and 9 per cent high (>57 kg/ha) in available phosphorus. About 12 per cent is low (<145 kg/ha), 81 per cent medium (145-337 kg/ha) and 5 per cent high (>337 kg/ha) in available potassium. Available sulphur is low (<10 ppm) in 45 per cent, medium (10-20 ppm) in 50 per cent and high (>20 ppm) in 4 per cent area of the microwatershed. Available boron is low (<0.5 ppm) in 23 per cent, 62 per cent medium (0.5- 1.0 ppm) and high (>1.0 ppm) in about 14 per cent area of the microwatershed. About 1 per cent area has soils that are deficient (<4.5 ppm) in available iron and 99 per cent sufficient (>4.5 ppm). Available manganese and copper are sufficient in all the soils of the microwatershed. Entire area of the microwatershed is deficient (