Uso de água residuária de suinocultura em pastagens: atributos químicos e translocação de nutrientes no Solo

Abstract

Livestock activity in Brazil is one of the most important, with Brazil being the largest exporter of beef in the world. And with the increasing demand for more productive and profitable pastures and to make this practice even more sustainable and economically viable, it is proposed the application of swine wastewater (SWW), which can be used for the nutritional reuse of the waste used in the breeding The objective of this work was to evaluate the effect of SWW on the chemical attributes of the soil, cultivated with Urochloa brizantha in the depths of 0-20 cm, 20 -40 cm, 40-60 cm. The work was carried out at Fazenda Bonsucesso, located in the municipality of Uberlândia-MG. The experimental field consists of Urochloa brizantha plots. The statistical design used was of randomized blocks with 4 replicates. The plots are 4 meters long by 4 meters wide; with an area of 16 m2 The treatments were five doses of swine wastewater (SWW): 0, 200, 400, 600 and 800 m³ ha-1 year-1, and the applications were divided into three applications in June, July and August of 2015. Pig wastewater reduces the values of P, Ca, Mg and Fe in the first year of application in Urochloa brizantha. For the other evaluated attributes, there is difference in the contents only as a function of the depths. The application of ARS reduces the pH value as the doses increase in Urochloa brizantha