LAND RESOURCE INVENTORY AND SOCIO-ECONOMIC STATUS OF FARM HOUSEHOLDS FOR WATERSHED PLANNING AND DEVELOPMENT ADAVALLI-5 (4D4A2O3d) MICRO WATERSHED Alavandi Hobli, Koppal Taluk and District, Karnataka

Abstract

The land resource inventory of Adavalli-5 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 585 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 8 soil series and 13 soil phases (management units) and 4 land use classes.  The length of crop growing period is <90 days and starts from 2nd week of August to 2nd 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 24 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 26 per cent of the soils are very shallow (<25 cm) to moderately shallow (50- 75 cm) and about 71 per cent are deep to very deep soils (100-150 cm).  Entire area has clayey soils at the surface.  About 62 per cent of the area has non-gravelly soils, 28 per cent gravelly soils (15-35 % gravel) and 7 per cent very gravelly (35- 60% gravel) soils.  About 26 per cent of the area has very low (<50mm/m) to low (51-100 mm/m) and 71 per cent area very high (>200mm/m) in available water capacity.  About 90 per cent area has very gently sloping (1-3%) and 7 per cent nearly level (0- 1%) lands.  About 89 per cent area is moderately eroded (e2) and 8 per cent slightly eroded (e1) lands.  An area of about 35 per cent is strongly alkaline (pH 8.4 to 9.0) and 62 per cent very strongly alkaline (pH>9.0).  The Electrical Conductivity (EC) of the soils are dominantly <2 dsm-1indicating that the soils are non-saline.  Organic carbon is low (<0.5%) in about 46 per cent, 39 per cent of the soils are medium (0.5-0.75%) and 12 per cent of the soils are high (>0.75%) in organic carbon.  Available phosphorus is low (<23 kg/ha) in the entire area of the microwatershed.  Available potassium is high (>337 kg/ha) in the entire area of the microwatershed.  Available sulphur is low (<10 ppm) in 57 per cent area, medium (10-20 ppm) in about <1 per cent area and about 39 per cent area is high (>10 ppm).  Available boron is low (0.5 ppm) in about 69 per cent area and high (>1.0 ppm) in 28 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, 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 324(55) 115 (20) Sapota - - Maize - - Jackfruit - - Bajra - - Jamun - 417 (71) Groundnut - 23 (4) Musambi 324(55) 92 (16) Sunflower 324 (55) 92(16) Lime 324(55) 92 (16) Chili - - Cashew - - Tomato - - Custard apple 324(55) 115 (20) Drumstick - 416 (71) Amla - 439 (75) Mulberry - 439 (75) Tamarind - 417 (71) Pomegranate - 416 (71) Marigold - 439 (75) Guava - - Chrysanthemum - 439 (75) Mango - 5 (<1) Jasmine - 23 (4) 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 for 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 in turn 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-5 micro-watershed (Koppal taluk, Koppal district) is located in between 15018’ – 15019’ North latitudes and 75057’ – 75059’ East longitudes, covering an area of about 585.39 ha, bounded by Kavalura, Alavandi Villages and Yelburga Taluk. 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 Social Indicators;  Male and female ratio is 46 to 56 per cent to the total sample population.  Younger age groups of population is around 52 per cent to the total population.  Literacy population is around 75.8 per cent.  Wood is the source of energy for a cooking among 57 per cent.  Around 71 % of farmers have taken yeshaswini health cards.  Majority of farm households (57 %) are having MGNREGA card for rural employments.  Dependence on ration cards through public distribution system is around 71 per cent  Swach bharath program providing closed toilet facilities around 43 per cent of sample households.  Institutional participation is only 6.1 per cent of sample households.  Rural migration to unban centre for employment is prevent among 14 per cent of farm households.  Women participation is decision making around 50 per cent. Economic Indicators;  The average land holding is 2.98 ha indicates that majority of farm households are belong to marginal and small farmers. 2  Agriculture is the main occupation among 31 per cent and agricultural labours is predominant subsidiary occupation for 54 per cent of sample households.  The average value of domestic assets is around Rs 31398 per household. Mobile and television are mass popular mass communication media.  The average farm assets values are around Rs 1283 per household. Sprayer and weeder are main farm assets.  The highest livestock population of bullocks are 14.3 per cent.  The average milk produced in sample households for 840 litter/annum and 1215 kg/ha average fodder availability for crop season.  The average per capita food consumption is around 677 grams (1856 kilo calories) against national institute of nutrition recommendation at 827 gram. Around 86 per cent of sample farmers are consuming less than the NIN recommendation.  The annual average income is around Rs 38532 per household. About 43 per cent of farm households are below poverty line.  The per capita monthly expenditure is around Rs 926 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 5345 per ha/year. The total cost of annual soil nutrients is around Rs 3019287 per year for the total area of 585.39 ha.  The average value of ecosystem service for food production is around Rs 7069/ ha/year. Per ha food production services is maximum in Bengal gram (Rs 5070/ha) followed by sunflower (Rs 4866/ha) and sorghum (Rs. 2588/ha).  The average value of ecosystem service for fodder production is around Rs 1567/ ha/year of sorghum.  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 51173) followed by sorghum (Rs 37733) and Sunflower (Rs 19603). Economic Land Evaluation;  The major cropping pattern is sunflower (54 %) followed by sorghum (29 %) and Bengal gram (16 %).  In Adavalli-5 micro watershed, major soils are Handral (HDL) and Gatareddihalla series are having deep soil depth cover for 43 % and 14 % of area, respectively. On this soil farmers are presently growing Bengal gram (67 %), Sorghum (33 %) and sunflower. Belgatti (BGT) soil series are having very shallow soil depth cover around 20 per cent of area, major crops grown are 3 sorghum. Kadagathur (KDT) and Bardur (BDR) soil series are having Very deep soil depth cover of 5.58 % and 7.2 % of area, crops sunflower and Muttal (MTL) soil series having deep soil depth cover of 2.3 % of area, major crop is sorghum.  The total cost of cultivation in study area for Sunflower ranges between Rs. 16122/ha in KDT soil (with BCR of 1.34) and Rs. 13516/ha in BDR soil (with BCR of 1.46),  In sorghum the cost of cultivation range between Rs. 18137/ha in HDL soil (with of 0.82) and Rs. 10223/ha in BGT soil (with BCR of 1.23).  In bengal gram the cost of cultivation in HDL soil is Rs. 23324/ha (with BCR of 1.14). 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 bengal gram (16.7%), sorghum (16.5 to 49.7%) and sunflower (42.8 to 55.6%).