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Liquid bio-inoculant's were prepared using Nitrogen fixing Azospirillum brasilense, Phosphorus solubilising Bacillus megaterium var. phosphaticum and plant growth promoting rhizobacteria Pseudomonas fluorescens. The results obtained indicated that the inoculants supplemented with 10 mM of phosphate buffer (pH 7) + 10% glycerol supported maximum survival of Azospirillum (0.17 x 1019 MPN/mL), Bacillus (25 x 1019 cfu/mL) and Pseudomonas (21 x 1019 cfu/mL) population at room temperature.
Nitrogen fixing bacteria, Phosphorus solubilizing bacteria (PCB), plant growth promoting rhizo-bacteria (PGPR), cell protectants, storage