The results showed that treatment with PSB inoculant gave the better result in soil P up to 7,66 mg 100 g-1 compared to controls 6,87 mg 100 g-1 (Table 1). Mix inoculant of PSB and PSF showed an average result of soil P up to 6.98 mg 100 g-1. This shows the effect of the PSB towards the content of soil P tend to be higher than those by Mix inoculant of PSB and PSF
Doses of P fertilizer 50% recommendation gave better effect on soil P up to 12.37% compared to controls. Increasing doses of fertilizer P more than 50% recommendation were not increasing content of soil P (Table 1). Fertilizer dose 75% and 100% of recommendations were only able to increase content of soil P up to 4,52 % and 5,94% respectively as compared with the control, this is thought to be due to the giving of excessive P fertilizer causes the saturation on the ground so that the phosphate from fertilizer wasted and could not be saved into content of soil P.