
The present study was focused on the evaluation of diazotrophic Azotobacter biofertilizer potential of strain on the growth of Sorghum bicolor. Two potential Azotobacter strains were mass cultured and used as diazotrophic biofertilizer for crop study with S.bicolor in various treatments as individual culture and its combination using pot culture for 30 days. The result of pot culture studies reveals that the combined application of Azotobacter Strain 1 and 2 increased the growth of Sorghum crop. Thus, these two diazotrophic Azotobacter strains could be used as efficient and ecofriendly biofertilizer for the improved crop production.