This paper reports the results obtained in a test conducted in 1936-37 at the Central Experiment Station, Campinas, to study the influence of some fertilizers on the germination of cotton seeds. "No fertilizer" plots were compared with plots fertilized with 0-50-0, 0-50-50 and 10-50-50 kilograms of N-P2O5-K2O per hectare. N and K2O were used respectively as Chilean nitrate and potassium chloride; P2O5, as superphosphate, Renaniaphosphate or bone meal. All these fertilizers were also used at double rates, and both single and double rates were applied either in the seed furrows or in the hills. The 38 treatments of the experiment were replicated three times. The plots consisted of rows 20.9 meter long, the spacing between them being 1.20 meters. Each row contained 53 hills about 0.40 meters apart and each hill received six seeds. The corresponding quantities of fertilizer were applied either continuosly in the furrows or only in the hills. In both cases the fertilizers were slightly mixed with the soil, the seeds being immediately planted on the fertilized soil. The emerged plants were counted daily during 36 days since the planting date. Superphosphate and bone meal did not affect the stands when applied as sole fertilizers either in the furrows or in the hills. However, Rhenaniaphosphate used as sole fertilizer, as well as the mixtures of potassium chloride with any of the phosphates and principally the mixtures containing in addition Chilean nitrate reduced severely the stands of the plots in which they were applied in the hills; where the application was made continuously in the furrows they reduced much less the stands. Besides reducing the stand potassium chloride and Chilean nitrate retarded the emergence of the plants. As a rule the damage increased as the local concentration of fertilizers grew stronger. It rained fairly well during the period immediately after planting, what contributed to diminish the damage in a general manner. If the weather had been dry, even for a short period, as it happens often, and certainly the application in the furrows would have been also highly injurious. Hence the conclusion that, for evaluating the effect of fertilizers on the cotton yield, methods others than mixing them with the soil in contact with the seeds, be it in the hills or in the furrows, must be used.