Ashoka, H.G.LAXMAN, JAMADAR2021-10-082021-10-082020-10-01Th-12618https://krishikosh.egranth.ac.in/handle/1/5810176824The study on rain water balance of micro catchments under finger millet cropping system of alfisols was carried out at the AICRP & DA, GKVK, UAS Bangalore to work out the rain water balance for different soil and water conservation measures with varied slopes viz., 1.9 %, 2.24 % and 2.1 %. The total rainfall and ET crop during the finger millet cropping period was 604 mm and 250.98 mm respectively. The lowest and the highest runoff was observed in T1 (150.98 mm) and T4 (230.43 mm) respectively. Also the highest deep percolation was observed in T1 (170.64 mm). In general the study reveals a negative water balance for the finger millet crop during the year under study. Higher soil moisture, plant height (87.52 cm at harvest), number of tillers (51.50 at harvest), grain yield (2512 kg ha-1), net returns (Rs.53923 ha-1) and B:C ratio (3.09) was found in T1 due to higher moisture conserved by the trenches and reduced runoff and soil loss. From the investigation conducted, it is concluded that contour trenches at 10 m spacing was found to be efficient in reducing both runoff and soil loss and enhanced crop productivity.EnglishThesis