Avaliação da disposição final de dejetos líquidos de suínos no solo

Abstract

The application of swine manure is not an increasingly common practice with a purpose of targeting swine rejects. However, net pig slurries - DLS, have a high nutrient load, are composed as animal feed. The release of manure in soils to nourish it can, however, contaminate it. In this context, the objective of this study was to investigate environmental degradation and the health risks caused by micronutrients (B, Fe, Mn, Cu and Zn) from the release of DLS in the soil, in Rio Verde - Goiás. for the study of changes in environmental specifications in soils. Soils samples were collected in 15 sites with DLS launch, and 6 sites with no effluent release. As pieces we have the following planes with a depth of 0-20cm, following to 20-40cm and finally, 40-60cm. Comparison of the results obtained with the free soils with the soils with the application of DLS and also with the reference values of quality of the soil configurations in resolution CONAMA 420/2009. This resulted in a change in micronutrient values, which leads to environmental degradation and consequently poses risks to human health, among them: reduction in Boron availability up to 100 (one hundred) times for soils with DLS applications, considerable changes in Fe, Cu, Zn and Mn in relation to free soils. It is concluded that the successive application of pig manure in the same area alters the management of micronutrients in the profile, including heavy metals, modifying as natural signs of soil, logo, degrading and generating human health risks.