The results obtained in a 3³ factorial experiment on the applications of the three major elements for the sugar cane are presented in this paper. The fertilizer levels used were, as follows: (1) Nitrogen, applied os ammonium sulphate at the rates of 0, 50, and 100 kg/ha; (2) Phosphorus, applied as superphosphate at the rates of 0, 80, and 160 kg/ha of P2O5; and (3) Potassium, as potassium chloride at the rates of 0, 60, and 120 kg/ha of K2O. All cultural operations were carried out as in commercial plantings. The results indicated that potassium was the element that gave the highest yield increases. There was a linear relationship between potassium levels and yield gains. Nitrogen also increases the yield linearly, but its effects was less noticeable than that of potassium. The response to phosphorus was not statistically significant.