Efeito da aplicação de água residuária na cultura do milheto.

Abstract

In the process of attainment of the products derived from the cassava (Manihot esculenta Crantz), one generates residues in great amounts, causing ambient problems, mainly in rivers. The performance of the crop of millet with the use effluent of cassava industry was evaluated in this work as source of organic fertilization. The effluent of cassava industry was applied in five intervals of irrigation to each 15 days after the germination. To the measure that they had been completing the doses of effluent of cassava industry application, in the remaining period the same ones had been substituted by water in doses equivalents. The treatment had consisted of water, effluent of cassava industry (225m3, 475m3, 725m3) and 100 kg of N ha-1. The maximum productions of green mass and dry, had been of 22945 and 7232 kg ha-1 with the 468 and 500m3 effluent of cassava industry, respectively. The treatment that only received water differed statistically (p<0,05) enters too much treatments in lesser value of green mass and drys. The effluent of cassava industry showed able as fertilizing for crop of millet. The effluent of cassava industry application substitutes the nitrogen fertilization and at the same time it reduces the risks of water stress.