USO DO SÓLIDO DE SUÍNOS DE FORMA PARCELADA COMO FONTE DE NITROGÊNIO (N) EM ADUBAÇÃO DE COBERTURA NO CULTIVO DO MILHO VERDE IRRIGADO POR GOTEJAMENTO

Abstract

The use of swine solid has become an alternative as a way to replace chemical fertilization, contributing to the significant development of the crops and the reduction of the production cost. drip irrigated green maize using swine solids as a nitrogen source (N), applying from 1 to 4 dose haul applications (8,571 kg ha-1), compared to conventional fertilization using urea (45% N), also in installments of 3 applications, in line with dose (400 kg ha-1). The experiment was conducted at the Federal Institute Goiano Campus Urutaí, from March to May 2019. The experimental design was a randomized block with five treatments and four replications totaling 20 experimental plots, with an area of 1,521 m² (1.17 x 1.3 m) . It was verified that there was no influence of pig solids applications compared to the use of urea in green corn crop in most of the analyzed variables, only in the plant height variable, a significant variation was verified according to the analysis of variance. and application of the Tukey test at 5% significance. The results showed that under the conditions of the experiment, when partitioning the application of swine solids in topdressing fertilization did not show great differences when compared to the use of a nitrogen source (N).