Effect of integrated nutrient management in groundnut on yield, nutrient uptake, availability of secondary nutrients and microbial activity in soil at coastal zone of Karnataka

Abstract

Pod yield was significantly superior in POP + 50 per cent RDN through poultry manure (2272 kg ha-1) followed by POP + 50 per cent RDN through vermicompost (2162 kg ha-1) and POP + 50 per cent RDN through goat manure (2018 kg ha-1). Higher uptake of calcium resulted in POP + 50 per cent RDN through poultry manure followed by POP + 50 per cent RDN through vermicompost (32.50 and 30.95 kg ha-1, respectively). The highest total uptake of magnesium (14.92 kg ha-1) was recorded in POP +50 per cent RDN through goat manure, followed by POP + 50 per cent RDN through vermicompost (12.98 kg ha-1). Significantly higher sulphur uptake (15.17 kg ha-1) resulted in POP + 50 per cent RDN through poultry manure, followed by POP + 50 per cent RDN through vermicompost (13.60 kg ha-1). Higher bacteria, fungi and actinomycetes population (37.27 cfu x 105, 41.92 cfu x 103 and 13.73 cfu x 104 g-1 of soil, respectively) were found by the application of recommended dose of nutrients (POP) + 50 per cent RDN through vermicompost