Abstract
The phosphate solubilizing bacteria (phosphobacteria) secrete organic acids and phosphatase enzymes which act on insoluble phosphates and convert the same into soluble forms thus providing available phosphorus to the plants. They are also known to produce amino acids, vitamins and growth promoting substance like indole acetic acid (IAA), which helps in better growth of plants. The present studyaimed to isolate and screen out phosphate solubilizing bacteria from soil rhizosphere using serial dilution technique on pikovskaya agar plate. An effort was also made to obtain bacterial isolates for producing phosphatase enzyme and to study the production of IAA in NBRIP media containing tryptophan as a substrate.A total of 17 strains were isolated from soil rhizosphere and all the strains were able to produce IAA and phosphatase enzyme in vitro condition.
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