The Bioinoculants are gaining importance in sustainable agriculture various complementing combinations of microbial inoculants for management of major nutrients such as nitrogen and phosphorus is necessary for sustainability. The present study was undertaken to assess the efficacy of carrier, alginate bead and liquid formulations and bioinoculant consortium of Azospirillum lipoferum, Bacillus megaterium and Pseudomonas fluorescence on the growth and yield of sunflower. The bioinoculant consortium improves the colonization potential, sustainability within the inoculants and enhances crop growth hence we hypothesize that microbial consortium enhances plant growth positively by a multitude of synergistic mechanisms when compared to single inoculant application. The results reveal that bioinoculant treatment of liquid formulation of Azospirillum lipoferum (AUAz-1) + Bacillus megaterium (AU Ba-1) + Pseudomonas fluorescence (AU Ps-1) produced the highest recorded values in all growth and yield parameters compared with carrier based and alginate bead formulations.
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