Study was conducted to evaluate the effect of different fertilizer regimes on fungal to bacterial ratio and correlation between the carbon related microbial community and enzyme activities. Result showed that application of bioinoculant with green manure significantly decreased F/B biomass ratio () which is significantly lower than treatment having sole application of inorganic fertilizer. Application of green manure and bioinoculant has significant positive effect on population of cellulose utilizing bacteria and amylolytic bacteria indicated by significant positive correlation of these microbial groups with enzyme activities. | Interaction of different carbon related microbial activities as influenced by green manure and bio inoculants in kharif maize crop