Maize is grown throughout the year in India during kharif crop. Nitrogen and phosphorus are essential nutrients for plant growth and development in corn. Twenty four (24) phosphate solubilizing bacteria (i.e., sixteen Bacillus and eight Pseudomonas) were isolated from Maize Research Station and college farm, Rajendranagar, PJTSAU, Telangana. Persistency of Phosphate solubilizing biofertilizers in soil was recorded at different growth stages viz., vegetative, flowering and harvesting stage. There was an increasing trend observed from the vegetative to flowering stages and also a gradual decrease was observed from flowering stage towards harvesting stage. Similar trend was observed for all the treatments studied. But significantly higher were recorded in the treatment T7 - Carrier + Liquid + Biofilmed PSB biofertilizer at vegetative (22.40x107cfu g-1), flowering (26.60x107cfu g-1) and at harvesting (22.03x107cfu g-1) stage. The major outcome of this study was the Carrier + Liquid + Biofilmed PSB biofertilizer treated Maize (Zea mays) plants showed best performance for all the biological parameters measured than untreated and individual cultures.

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