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Title: | LAND RESOURCE INVENTORY AND SOCIO-ECONOMIC STATUS OF FARM HOUSEHOLDS FOR WATERSHED PLANNING AND DEVELOPMENT NALLUR (4B3D3N2c) MICROWATERSHED Gubbi Taluk, Tumkur District, Karnataka |
Other Titles: | Not Available |
Authors: | Rajendra Hegde, Ramesh Kumar, S.C., K.V. Niranjana, S. Srinivas, M.Lalitha, B.A. Dhanorkar, R.S. Reddy and S.K. Singh |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | ICAR::National Bureau of Soil Survey and Land Use Planning |
Published/ Complete Date: | 2019-12-31 |
Project Code: | Not Available |
Keywords: | Details of Soil Survey, Soil constraints, Soil and Water Conservation, Soil Suitability, Economic Land Evaluation, Watershed Planning, Sujala – III Project |
Publisher: | ICAR::National Bureau of Soil Survey and Land Use Planning, Regional Centre, Bengaluru & Watershed Development Department, Government of Karnataka (Sujala-III Project) |
Citation: | 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 Nallur (4B3D3N2c) Microwatershed, Gubbi Taluk, Tumkur District, Karnataka”, ICARNBSS& LUP Sujala MWS Publ.84 ICAR – NBSS & LUP, RC, Bangalore. p.105 & 30 |
Series/Report no.: | 84; |
Abstract/Description: | The land resource inventory of Nallur 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 boundries. The soil map shows the geographic distribution and extent, characterstics, classification and use potentials of the soils in the microwartershed. The present study covers an area of 604 ha in Gubbi taluk of Tumakuru district, Karnataka. The climate is semiarid and categorized as drought-prone with an average annual rainfall of 813 mm, of which about 466 mm is received during south-west monsoon, 196 mm during north-east and the remaining 151 mm during the rest of the year. An area of about 95 per cent is covered by soils and two per cent by others. The salient findings from the land resource inventory are summarized briefly below. The soils belong to 7 soil series and 13 soil phases (management units) and 4 land use classes. The length of crop growing period is about 150 days starting from 3rd week of June to third 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 250 m grid interval. Land suitability for growing 34 major agricultural and horticultural crops were assessed and maps showing the degree of suitability along with constraints were generated. Entire area is suitable for agriculture. About 98 per cent of the soils are deep (100-150 cm) to very deep (>150 cm). About 2 per cent of the area has clayey soils at the surface and 96 per cent loamy soils. Entire area in the microwatershed has non-gravelly soils (<15%). An area of about 35 per cent are low (51-100 mm/m), 11 per cent medium (101-150 mm/m) and a maximum area of 52 per cent very high (>200 mm/m) in available water capacity. About 98 per cent of the area has nearly level (0-1%) to very gently sloping (1-3% slope) lands. An area of about 83 per cent has soils that are slightly eroded (e1) and 15 per cent moderately eroded (e2). Maximum area of about 68 per cent has soils that are slightly acidic to moderately and strongly acid (pH 5.0-6.5), 27 per cent area neutral (pH 6.5-7.3) and about 2 per cent has soils that are slightly alkaline (pH 7.3 to 7.8). The Electrical Conductivity (EC) of the soils are dominantly <2 dsm-1indicating that the soils are non-saline. About 87 per cent of the soils are low (<0.5%) and 11 per cent soils are medium (0.5- 0.75%) in organic carbon. Entire area in the microwatershed is high (>57 kg/ha) in available phosphorus. About 13 per cent of the soils are low (<145 kg/ha), medium (145-337 kg/ha) in 80 per cent area and 5 per cent of the soils are high (>337 kg/ha) in available potassium. Available sulphur is medium (10 -20 ppm) in an area of about 97 per cent and low (10 ppm) in an area of 1 per cent. Available boron is low (<0.5 ppm) in maximum area about 55 per cent and medium (0.5-1.0 ppm) in 43 per cent area. Available iron is sufficient (>4.5 ppm) in the entire area. Available manganese and copper are sufficient in all the soils of the microwatershed. Available zinc is deficient (<0.6 ppm) in 31 per cent and sufficient (>0.6 ppm) in 67 per cent of soils of the microwatershed. The land suitability for 34 major crops grown in the microwatershed were assessed and the areas that are highly suitable (S1) and moderately suitable (S2) are given below. It is however to be noted that a given soil may be suitable for various crops but what specific crop to be grown may be decided by the farmer looking to his capacity to invest on various inputs, marketing infrastructure, market price and finally the demand and supply position. Land suitability for various crops in the Microwatershed Crop Suitability Area in ha (%) Crop Suitability Area in ha (%) Highly suitable (S1) Moderately suitable (S2) Highly suitable (S1) Moderately suitable (S2) Sorghum 381 (63) 196 (32) Guava 155(27) 173 (30) Fodder Sorghum 381 (63) 196 (32) Pomegranate 381 (63) 196 (32) Maize 69 (11) 508(84) Banana 381 (63) 196 (32) Upland paddy 381 (63) 196 (32) Jackfruit 381 (63) 196 (32) Finger millet 381 (63) 196 (32) Jamun 357 (59) 220 (36) Redgram 381 (63) 196 (32) Musambi 381 (63) 196 (32) Horse gram 381 (63) 212 (35) Lime 381 (63) 196 (32) Field bean 381 (63) 196 (32) Cashew 381 (63) 196 (32) Cowpea 381 (63) 196 (32) Custard apple 439 (73 ) 154(26) Groundnut 24 (4) 512 (85) Amla 438 (73 ) 154(26) Sunflower 381 (63) 196 (32) Tamarind 357 (59) 220 (36) Onion 69(11) 508(84) Marigold 381 (63) 209 (34) Chilli 381 (63) 196 (32) Chrysanthemum 381 (63) 209 (34) Brinjal 381 (63) 196 (32) Jasmine 381 (63) 209 (34) Tomato 381 (63) 196 (32) Coconut 381 (63) 196 (32) Mango 357 (59) 220(36) Arecanut 381 (63) 196 (32) Sapota 381 (63) 196 (32) Apart from the individual crop suitability, a proposed crop plan has been prepared for the 4 identified LUCs by considering only the highly and moderately suitable lands for different crops and cropping systems with food, fodder, fibre and horticulture crops. Maintaining soil-health is vital to crop production and conserve soil and land resource base for maintaining ecological balance and to mitigate climate change. For this, several ameliorative measures have been suggested to these problematic soils like saline/alkali, highly eroded, sandy soils etc., Soil and water conservation treatment plan has been prepared that would help in identifying the sites to be treated and also the type of structures required. As part of the greening programme, several tree species have been suggested to be planted in marginal and submarginal lands, field bunds and also in the hillocks, mounds and ridges that would help in supplementing the farm income, provide fodder and fuel and generate lot of biomass. This helps in maintaining an ecological balance and also helps in mitigating the climate change. |
Description: | Not Available |
ISSN: | Not Available |
Type(s) of content: | Project Report |
Sponsors: | Watershed Development Department, Government of Karnataka (World Bank Funded) Sujala –III Project |
Language: | English |
Name of Journal: | Not Available |
Volume No.: | Not Available |
Page Number: | p.105 & 30. |
Name of the Division/Regional Station: | ICAR::National Bureau of Soil Survey and Land Use Planning, Regional Centre, Bengaluru |
Source, DOI or any other URL: | Not Available |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/49931 |
Appears in Collections: | NRM-NBSSLUP-Publication |
Files in This Item:
File | Description | Size | Format | |
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84.Nallur(4B3D3N2c).pdf | 15.55 MB | Adobe PDF | View/Open |
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