Isolation and Characterization of Phosphate Solubilizing Bacteria from Tomato (Solanum l.) Rhizosphere and Their Effect on the Host Plant under Green House Experiment

A total of eleven phosphate solubilizing bacteria were isolated from rhizosphere soil of tomato (Solanum lycopersicum) plants. Isolates designated as PSB1 PSB2 PSB4 PSB5 and PSB7 were selected out of eleven isolates based on their clear zone diameters. They were characterized to generic level and found to belong to Pseudomonas spp. Tricalcium phosphate (TCP) rock phosphate (RP) and bone phosphate (BP) solubilizing efficiency of these isolates was studied in the laboratory at 5 10 and 15 days of incubation. All bacterial isolates solubilized significantly (P 0.05) higher amounts of TCP over uninoculated control. The highest P was release upon 5 days of incubation was recorded from the ...