The use of phosphate solubilising bacteria as inoculants simultaneously increases p uptake by the plant and cup yield. Strains from the genera Pseudomonas, Bacillus and Rhizobium are among the most powerful phosphate solubilise. The principal mechanism for mineral phosphate solubilisation is the production of organic acid and acid phosphatises play a major role in the mineralization of organic acids and acid phosphates play major role in the mineralization of organic phosphorous in sail several phosphates encoding genes have been cloned and characterized and a two genes involved in mineral phosphate solubilising bacteria to improve their ability to improve plant growth may include donning genes involved in both mineral and organic phosphate solubilisation followed by their expression in selected.