Effect of organic, inorganic and integrated nutrient management on yield attributes, production of onion and soil properties, under vertisol of Maharashtra

Abstract

Field experiment was conducted in rabbi season of 2016-17 at Research Farm of at AICRP on Integrated farming System. Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani entited "Effect of Organic, Inorganic and Integrated Nutrient Management on Soil Properties, Production and Economics of Onion Under Vertisol". The experiment was laid out on Vertisols with eight treatment combination, replicated three times in randomized block design. Application 50% recommended NPK +50% N trough FYM/crop residues/compost/other organic source + inorganic sources of micronutrient as per soil test the highest onion bulb yield (139.57 qt ha -1 ) and leaf strew yield (2.02 qt ha -1 ) was recorded by INM treatments. The growth parameters of onion plant height, number of leaves per plant significantly differed over inorganic and absolute control during crop growth period. Similarly, nutrient availability of N (183.56 kg ha -1 ), P (14.23 kg ha -1 ) and K (369.56 kg ha -1 ) was recorded of application of treatment 50% recommended NPK + 50% N trough FYM/crop residues/compost/other organic source + inorganic sources of micronutrient as per soil test than rest of the treatments. The bulk density was improved by application of organic and INM than inorganic and control treatments during the crop growth period. The results in respect of pH, EC and organic carbon showed significant variations among the treatments due to application of organic, inorganic and INM treatment.