LAND RESOURCE INVENTORY AND SOCIO-ECONOMIC STATUS OF FARM HOUSEHOLDS FOR WATERSHED PLANNING AND DEVELOPMENT ADAVALLI-1 (4D4A2O3e) MICROWATERSHED Koppal Taluk and District, Karnataka ; Not Available
Not Available ; The land resource inventory of Adavalli-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 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 boundries. The soil map shows the geographic distribution and extent, characterstics, classification, behavior and use potentials of the soils in the microwartershed. The present study covers an area of 427 ha in Koppal taluk and district, Karnataka. The climate is semiarid and categorized as drought - prone with an average annual rainfall of 662 mm, of which about 424 mm is received during south –west monsoon, 161 mm during north-east and the remaining 77 mm during the rest of the year. An area of about 97 per cent is covered by soils, three per cent by waterbodies, settlements and others. The salient findings from the land resource inventory are summarized briefly below. The soils belong to 5 soil series and 12 soil phases (management units) and 4 land use classes. The length of crop growing period is 150 cm). Entire area has clayey soils at the surface. About 42 per cent of the area has non-gravelly soils, 45 per cent gravelly soils (15-35 % gravel) and 10 per cent very gravelly to extremely gravelly (35- 80% gravel) soils. About 49 per cent of the area has very low (200mm/m) available water capacity. Entire area has very gently sloping (1-3%) lands. Entire area has moderately eroded (e2) lands. An area of about 12 per cent has soils that are moderately alkaline (pH 7.8 to 8.4) and 85 per cent strongly alkaline (pH 8.4 to 9.0) to very strongly alkaline (pH>9.0). The Electrical Conductivity (EC) of the soils are dominantly 0.75%) in organic carbon. Available phosphorus is low (337 kg/ha) in available potassium. Available sulphur is low (10 ppm). Available boron is low (0.5 ppm) in about 72 per cent area and medium (0.5-1.0 ppm) in 25 per cent area. Available iron is sufficient (>4.5 ppm) in the entire area. Available zinc is deficient (<0.6 ppm) in the entire area. Available manganese and copper are sufficient in all the soils. The land suitability for 24 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, 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 145 (34) 236 (55%) Sapota - - Maize - - Jackfruit - - Bajra - - Jamun - 159 (37) Groundnut - 205 (48%) Musambi 145 (34) 60 (14) Sunflower 145 (34%) 60 (14) Lime 145(34%) 60 (14%) Chilli - - Cashew - - Tomato - - Custard apple 159 (37) 222 (52) Drumstick - 205 (48) Amla - 381 (89) Mulbery 381 (89) Tamarind - 159 (37) Pomegranate - 205 (48) Marigold - 381 (89) Guava - - Chrysanthemum - 381 (89) Mango - - Jasmine - 176 (41) 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 other 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 which inturn would help in maintaining the ecological balance and contributes to mitigating the climate change. Baseline socioeconomic characterisation is prerequisite to prepare action plan for program implementation and to assess the project performance before making any changes in the watershed development program. The baseline provides appropriate policy direction for enhancing productivity and sustainability in agriculture. Methodology: The Adavalli-1 micro-watershed (Koppal taluk and district) is located in between 15018' – 15020' North latitudes and 75053' – 75055' East longitudes, covering an area of about 426.80 ha, bounded by Kavalura village. It falls under Agro Ecological Region (AER)–3: (Deccan plateau, hot arid ecosubregion) Karnataka Plateau (Rayalseema as inclusion), hot arid ESR with deep loamy and clayey mixed red and black soils, low to medium AWC and LGP 60-90 days. We used soil resource map as basis for sampling farm households to test the hypothesis that soil quality influence crop selection, and conservation investment of farm households. The level of technology adoption and productivity gaps and livelihood patterns were analyses. The cost of soil degradation and ecosystem services were quantified for each watershed. Results: We found that among the sample farm households Social Indicators; Male and female ratio is 41 to 59 per cent to the total sample population. Younger age 18 to 50 groups of population is around 66.6 per cent to the total population. Literacy population is around 48.1 per cent. Wood is the source of energy for a cooking among 62.5 per cent. About 25 per cent of households have a Yashiswini health card. Majority of farm households (100 %) are having MGNREGA card for rural employments. Dependence on ration cards through public distribution system is around 100 per cent. Swach bharath program providing closed toilet facilities around 25 per cent. Institutional participation is only 13 per cent. Rural migration to unban centre for employment is prevalent among 50 per cent. Women participation is decisions making are not found. Economic Indicators; The average land holding is 3.18 ha indicates that majority of farm households are belong to marginal and small farmers. Agriculture is the main occupation among 33 per cent and Agriculture labour is predominant subsidiary occupation for 55.56 per cent of sample households. 2 The average value of domestic assets is around Rs 15415 per household. Mobile and television are mass popular mass communication media. The average farm assets a value are around 2 lacks per household, about 12.5 per cent of sample farmers owned tractors. The average livestock value is around Rs 30000 per livestock; about 25 per cent of household are having livestock. The average per capita food consumption is around 625 grams (1539 kilo calories) against national institute of nutrition recommendation at 827 gram. Around 88 per cent of sample farmers are consuming less than the NIN recommendation. The annual average income is around Rs 32775 per household. About 12.5 per cent of farm households are below poverty line. The per capita monthly expenditure is around Rs 705 per household. Environmental Indicators-Ecosystem services; The value of ecosystem service helps to support investment to decision on soil and water conservation and in promoting sustainable land use. The onsite cost of different soil nutrients lost due to soil erosion is around Rs 7526 per ha/year. The total cost of annual soil nutrients is around Rs 3100732 per year for the total area of 426.80 ha. The average value of ecosystem service for food production is around Rs 2552/ ha/year. Per ha food production services is maximum in sunflower (Rs 4009/ha) followed by sorghum (Rs 3383/ha), Bengal gram (Rs. 1554/ha) and Maize (Rs. 1264/ha). The average value of ecosystem service for fodder production is around Rs 615/ ha/year of maize crops. The data on water requirement for producing one quintal of grain is considered for estimating the total value of water required for crop production. The per hectare value of water used and value of water was maximum in Bengal gram (Rs 25587) followed by Sunflower (Rs 16843), sorghum (Rs 16939) and maize (Rs 7043). Economic Land Evaluation; The major cropping pattern is Maize (49.52 %) followed by sunflower (29.26 %), Bengal gram (6.43 %), Sorghum (6.43 %) and green gram (2.36 %). In Adavalli-1 micro watershed, major soils are Belagatti (BGT) soil series are having very shallow soil depth covers around 6.02 % of area. On this soil farmers are presently growing is maize. Ravanaki (RNK) series are having moderately shallow soil deep cover around 42.63 % of area, crops growing Sunflower (67.72 %) and Bengal gram (32.28 %). Handral (HDL) soil series are having deep soil 3 depth cover around 24.16 per cent of area; crops are Maize (65.12 %), Sorghum and Sunflower (17.39 %) each. The total cost of cultivation in the study area for Sunflower ranges between Rs. 15287/ha in RNK soil (with BCR of 1.01) and Rs. 7592/ha in HDL soil (with BCR of 1.56). In maize the cost of cultivation range between Rs. 10528/ha in BGT soil (with of 1.06) and Rs. 9779/ha in HDL soil (with BCR of 1.01). In sorghum the cost of cultivation in HDL soil is Rs. 7612/ha (with BCR of 1.31) and Bengal gram cultivation in RNK soil is Rs. 14100/ha (with BCR of 1.1). Suggestions; Involving farmers is watershed planning helps in strengthing institutional participation. The per capita food consumption and monthly income is very low. Diversifying income generation activities from crop and livestock production in order to reduce risk related to drought and market prices. Majority of farmers reported that they are not getting timely support/extension services from the concerned development departments. By strengthing agricultural extension for providing timely advice improved technology there is scope to increase in net income of farm households. By adopting recommended package of practices by following the soil test fertiliser recommendation, there is scope to increase yield in maize (57.5 %), sorghum (18.8 %), sunflower (11.3 %) and bengal gram (9 %). ; Watershed Development Department, Government of Karnataka (World Bank Funded) Sujala –III Project