Soil Fertility Evaluation and Mapping of Burugamaradoddi Microwatershed of Ramanagara Taluk, Ramanagara District, Karnataka

Abstract

The present investigation was conducted to know the soil fertility status of Burugamaradoddi microwatershed of Ramanagara district. The soil samples were collected from 0-15 cm soil depth from 70 locations. Soil fertility maps were prepared for pH, electrical conductivity, organic carbon, available nitrogen, available phosphorous, available potassium and available sulphur, exchangeable calcium and magnesium, available boron and available micronutrients viz., iron, manganese, zinc, copper and zinc. Results revealed that the soils were slightly acidic (pH: 5.35-8.32) to moderately alkaline and electrical conductivity of soil were non- saline to slightly saline. The organic carbon status ranged from low to high (0.15-0.90%), and available nitrogen was mostly low. The soil available phosphorus was low to medium; available potassium was in low to medium range and exchangeable calcium and magnesium were found in sufficient range, available sulphur was in low to high range. Regarding available micronutrients, boron and zinc were in low category and level of copper, iron and manganese were in sufficient range. The assessment of soil fertility in Burugamaradoddi micro-watershed revealed that, watershed had better soil fertility status in soil.