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Studies on effect of INM (Integrated Nutrent Management) on nodulation, dry matter accumulation and yield of summer groundnut crop conducted during summer 2001-2002 at Navsari . The aim was to evaluate the change in nodulation, dry matter production responsible for difference in yield potential affected due to chemical fertilizer, organic manure and bio fertilizer. There was a linear increase in dry matter production from germination till harvest, whereas in case of nodulation linear increase in root nodule number up to 90 DAS and there after decrease root nodule number. It was observed that nodule number, dry matter plant-1 , pod and haulm yield of groundnut crop increased with application of 100 % RDF (25:50 N and P kg ha-1, 10 t FYM ha-1 and rhizobium or PSB seed inoculation). [ABSTRACT FROM AUTHOR]