Due to the fact that phosphate rock is water insoluble, the interaction of macro and micro organisms in the soil becomes important to increase its solubility. A study in the soil to investigate the effects of raw rock phosphate and earthworm castings application on the development and nutrient element content of corn plant was carried out in four frequency series as a greenhouse trial. To that end, 0-5-10-15-20-25-30-35 and 40 kg da-1 raw rock phosphate (15%) and earthworms (Lumbricus terrestris L.) were added to the soil in P2O5 application dose. Only the same does of raw rock phosphate was added to the other doses. Nutrient element content of the corn plant (N, P, K, Ca, Mg, Fe, Cu, Mn and Zn) in the pots with raw rock phosphate and earthworm castings application generally increased in comparison with the other pots which were not applied earthworm. According to the data obtained in the study, the effect of earthworm and different level of raw rock phosphate on the growth of corn plant was found statistically significant (p<0.05).