The objective of this experiment was to evaluate the effects of using phosphate-solubilizing bacteria and phosphate fertilizer on the growth and yield of eggplant. Experiment was conducted with six treatments (P₀Psb _- , P₁₀₀Psb _- , P₀Psb₊, P₂₅Psb₊, P₅₀Psb₊, P₇₅Psb₊) including phosphate-solubilizing bacteria (applied and non-applied) and five amounts of phosphate fertilizer (0, 200, 400, 600, and 800 P₂O₅ kg/ha). The phosphate-solubilizing bacteria were used as 20 ml with 2 L water at three times (before planted, 20 and 40 days after transplanted) for eggplant. The results indicated that the significant effects were found on the increase of shoot height and yield of eggplant with only applying phosphate- solubilizing bacteria (P₀Psb₊), which was the best treatment than others. Therefore, there were significant effects on the growth of eggplant with applying phosphate-solubilizing bacteria in alkaline soil (Bray no.1 extracted P>120 mg/kg). However, the application of phosphate-solubilizing bacteria and suitable amount of phosphate fertilizer was appropriated for eggplant growth.

Key words: phosphorus-solubilizing bacteria, eggplant, phosphate fertilizer .