LAND RESOURCE INVENTORY AND SOCIO-ECONOMIC STATUS OF FARM HOUSEHOLDS FOR WATERSHED PLANNING AND DEVELOPMENT BACHANAHALLI-1 (4B3E2E1e) MICROWATERSHED Gundlupet Taluk, Chamarajanagara District, Karnataka
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Title |
LAND RESOURCE INVENTORY AND SOCIO-ECONOMIC STATUS OF FARM HOUSEHOLDS FOR WATERSHED PLANNING AND DEVELOPMENT BACHANAHALLI-1 (4B3E2E1e) MICROWATERSHED Gundlupet Taluk, Chamarajanagara District, Karnataka
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Creator |
Rajendra Hegde, Ramesh Kumar, S.C., K.V. Niranjana, S. Srinivas, M.Lalitha, B.A. Dhanorkar, R.S. Reddy and S.K. Singh
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Subject |
Details of Soil Survey, Soil constraints, Soil and Water Conservation, Soil Suitability, Economic Land Evaluation, Watershed Planning, Sujala – III Project
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Description |
Not Available
The land resource inventory of Bachanahalli-1 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 the 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 and use potentials of the soils in the microwatershed. The present study covers an area of 567 ha in Gundlupet taluk of Chamarajanagar district, Karnataka. The climate is semiarid and categorized as drought prone with an average annual rainfall of 734 mm of which about 254 mm is received during south–west monsoon, 268 mm during north-east and the remaining 212 mm during the rest of the year. An area of about 66 per cent is covered by soils, 31 per cent by forest and 2 per cent by others. The salient findings from the land resource inventory are summarized briefly below. The soils belong to 8 soil series and 20 soil phases (management units) and 7 land management units. The length of crop growing period is about 150 days starting from the 3rd week of June to 3rd week of November. 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 320 m grid interval. Land suitability for growing major agricultural and horticultural crops were assessed and maps showing the degree of suitability along with constraints were generated. About 66 per cent area is suitable for agriculture. About 10 per cent soils are shallow (25-50 cm), 2 per cent of soils are moderately shallow (50-75 cm), 22 per cent of the soils are moderately deep (75-100 cm) and 33 per cent soils are deep (100-150 cm) to very deep (>150 cm). About 17 per cent of the area has clayey soils at the surface and 49 per cent area has loamy soils. About 35 per cent of the area has non-gravelly soils and 31 per cent gravelly soils (15-35 % gravel) soils. About 13 per cent has soils that are very low (200 mm/m) available water capacity. About 50 per cent of the area has very gently sloping (1-3% slope) lands and 16 per cent is under gently sloping (3-5%) lands. An area of about 37 per cent has soils that are slightly eroded (e1) and 29 per cent soils are moderately eroded (e2). An area of about 35 per cent has soils that are moderately acidic (pH 5.5-6.0) to slightly acidic (pH 6.0-6.5); 22 per cent area has neutral (pH 6.5-7.3) and an area of about 9 per cent has soils that are slightly alkaline (pH 7.3 to 7.8) to moderately alkaline (pH 7.8 to 8.4). The Electrical Conductivity (EC) of the soils are dominantly 337 kg/ha) in available potassium. Available sulphur is low ( Watershed Development Department, Government of Karnataka (World Bank Funded) Sujala –III Project |
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Date |
2020-12-27T07:19:22Z
2020-12-27T07:19:22Z 2019-12-31 |
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Type |
Project Report
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Identifier |
Rajendra Hegde, Ramesh Kumar, S.C., K.V. Niranjana, S. Srinivas, M.Lalitha, B.A. Dhanorkar, R.S. Reddy and S.K. Singh (2019). “Land Resource Inventory and Socio- Economic Status of Farm Households for Watershed Planning and Development of Bachanahalli-1 (4B3E2E1e) Microwatershed, Gundlupet Taluk and Chamrajangar District, Karnataka”, ICAR-NBSS&LUP Sujala MWS Publ.217, ICAR – NBSS & LUP, RC, Bangalore. p.107 & 31.
Not Available http://krishi.icar.gov.in/jspui/handle/123456789/44068 |
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Language |
English
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Relation |
217;
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Publisher |
ICAR::National Bureau of Soil Survey and Land Use Planning, Regional Centre, Bengaluru & Watershed Development Department, Government of Karnataka (Sujala-III Project)
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