Soil Enzymes and Micronutrients Status as Influenced by Integrated Nutrient Management Under Monocropping and Rotation Schedule in Rainfed afisols Ganapathi1,*, Naik Mohan I.2, Puttaiah E.T.3 1Department of Environmental Science, Gulbarga University, Gulbarga 2AINRP (Rodent control), UAS, GKVK, Bangalore 3Gulbarga University, Gulbarga *email: ganapathiguddekoppa@yahoo.com
Online published on 2 January, 2017. Abstract A field experiment was carriedoutat Zonal Agricultural and Horticultural Research Station, Navile, UAHS, Shivamogga during kharif 2012–13 and 2013–14 to study the soil enzymes and soil micronutrients status as influenced by use of FYM and NPK fertilizers. The soil was sandy clay loam in texture, high in available P, sufficient in Ca, Mg, low in organic carbon, water holding capacity, available K and available S. The experiment was conducted with ten treatments in RCBD design with three replication. The treatment receiving FYM @7.5 ton per ha either alone or along with NPK fertilizers recorded significantly higher DTPA extractable Zn, Mn, Fe and Cu status of soil as compared to NPK alone or control under finger millet monocropping and finger millet-groundnut rotation. Dehydrogenase, phosphatase and urease activities were found higher in the treatment receiving FYM along with NPK fertilizers than all other treatments. FYM audition increased the microbial activities. At initial and at harvest of crops recorded higher activities of enzymes and comparatively lower at tillering, flowering and pegging stages of crops. NPK alone applied plots recorded lower activities of dehydrogenase, phosphatase and urease after harvest of finger millet and groundnut. Top Keywords Integrated nutrient management, Monocropping, crop rotation, soil enzymes and Micronutrients status. Top |