Utilização de resíduo líquido da suinocultura na produção de fitomassa de aveia branca para cobertura vegetal

Abstract

The production of animal protein, mainly pork, has been gaining space in the national market in recent years, being part of Brazilian agribusiness. Oeste Santa Catarina has the largest pork production hub in the world, making this activity important in generating local employment. Along with this, the generation of waste grows rapidly, often having an inadequate disposal, which can pollute the environment. The aim of the study is to verify the effect of different doses of liquid waste from pigs, applied in Aveia Branca, for the production of mulch. The study was carried out in a rural property in the city of São José do Cedro/SC, and the experimental design was in randomized blocks, with three replications. The doses of DLS used were 0, 30, 60 and 120 m³ha-1, applied once in the plots. Before the installation of the experiment, soil samples were taken in the experimental area to verify fertility and a DLS sample was collected to carry out physical-chemical analysis. Analyzes of dry mass, aerial height, and mulch of the oat crop were also carried out. It was possible to statistically verify that in the treatment T4: 120 m³ha-1 there was the highest production of dry mass and the highest height of mulch on the ground between the treatments, and where there was no application of DLS (T1: 0 m³ha-1), the value was statistically lower for both dry mass and crop aerial height and mulch. It is concluded that the application of DLS is satisfactory to increase the phytomass production of the white oat crop, with the dose of 120 m³ha-1 being the most suitable to obtain the best vegetable production.