After green revolution the modern agriculture is getting more and more dependent upon the steady supply of inorganic fertilizers. But the recent energy crises and consequent price hike of fertilizers due to withdrawal of subsidy on fertilizers coupled with low purchasing power of farming community force the need to exploit other less expensive nutrient sources to the maximum. In order to raise their income and living standards of these farmers must maximize the crop productivity per unit area in the most effective manner. Bio fertilizer based on renewable energy sources are the cost effective supplement to inorganic fertilizer and it can help to economise on the high investment needed for fertilizers use as far as nitrogen and phosphorus nutrients are concerned. In this paper an analysis of various constrains experienced by the rice farmers in adopting recommended biofertilizer practices are studied. Findings revealed that the major constraints faced by rice farmers were, non availability of labour, lack of interest, lack of confidence towards various biofertilizer practices, lack of technical guidance, lack of training programme and non-availability of viable culture at Government depots.