Systems efficiency in the vinasse application aiming economy and environmental awareness

Abstract

Although the vinasse is rich in nutrients and able to replace conventional fertilizer, the application areas need to be topped with nitrogen, which is made with urea application by using larger cover manpower and equipment. But the application of nitrogen can be accomplished using the already existing system of fertigation, simply add the same one premix tank and pump insertion in the line. Treatments consisted of a witness, and three doses of vinasse application, corresponding to 150, 300 and 450 m3 ha-1 with the addition of urea solution equivalent to 200 kg ha-1 in each treatment, 150, 300 and 450 m3 ha -1 of vinasse with applications of 200 kg ha-1 urea applied by the conventional method for coverage, groove depth of 0.15 m, according to production units in the region. The aim of this study was to compare the effect of nitrogen, inserting into the line of stillage fertigation, with the system of conventional application of urea by coverage, in three doses of application in the cane sugar culture. The results indicate that dissolved urea may be applied through the fertigation system that does not result in a reduction or increase in income, but there will be less use of machinery and manpower, reducing production costs and impacts on the environment.