The present research was carried out at Fazenda Porto, Alfenas-MG, with the purpose of determining the effect of doses of swine wastewaters on sugarcane productivity. Two types of fertilization were tested on a second-cut sugarcane plantation, variety SP 81-3250, on dark red dystrophic latosol (LVEd): (1) swine wastewaters were used in the doses of 0, 40, 80, 120, 160 and 200 m³/ha, and applied all at once and (2) conventional chemical fertilization. The experimental design used was the randomized blocks with four replications. To compare the means, the SISVAR program and the Scott-Knott test were used. The harvest was made one year after the experiment implantation. The agricultural productivity and technological quality of sugarcane were determined. The dose of 40 m³/ha was equivalent to the chemical fertilizing, while the others showed 76.5% - 96.3% higher productivity when compared to the reference plantation (58.10t/ha). No statistical difference was found with regard to the technological quality of the stalks. The swine wastewaters provided significant increases in the sugarcane stalk productivity without jeopardizing the technological quality.
Fertilization; polluters; animal wastes
