This paper presents the results from a fertilizer trial comparing various nitrogen sources for the sugar cane. It was carried out at the Usina Tamôio, Araraquara, on a plot of "terra roxa misturada" type of soil. Castor-oil meal and calcium cyanamide were applied at planting time. The application of the other nitrogen sources was split three times. The average yields for the various treatments were the following: Treatments t/ha Check ................................... 70.1 PK without N ......................... 81.2 PK + N (castor-oil meal) .......... 90.6 PK + N (Chilean nitrate) ........... 89.4 PK -f- N (ammonium sulfate) ..... 91.2 PK + N (calnitro) .................... 91.4 PK -(- N (calcium cyanamide) ... 82.3 PK + N (urea) ....................... 88.1 The yields obtained with nitrogen applied as castor-oil meal, Chilean nitrate, ammonium sulfate, calnitro, and urea did not differ statistically; they were, however, significantly better than that obtained with calcium cyanamide.