The correlation between phosphorus, nitrogen and pH in the soil and the response to phosphate application was studied in 33 NPK fertilizer trials of the 3³ factorial design. The calculated responses to phosphorus based on the results of soil analysis and the actual yield values had the correlation coefficients r = 0.642 and r = 0.602 for the two levels, 60 and 120 kg of P2O5 per hectore, respectively. When the experiments in soils with a pH below 4.9 were excluded, as well as a single experiment in a soil extremely low in N, the remaining 24 trails gave the correlation values r = 0.844 and r = 0,877 for the two phosphorus levels respectively. It is believed that the corn response to phosphate application can be reasonably predicted based on phosphorus and nitrogen content and pH of the soil. The results of soil analysis may thus serve as a basis for phosphate fertilizer recomendation in case of this crop.