Determinação do teor de cobre, zinco e manganês em solos agrícolas com aplicação de dejeto suíno, no município de São João do Oeste/SC

Abstract

In the present study been evaluated the effects of applying swine manure over the years in soils of 9 properties in São João do Oeste, SC;being rated the content of the heavy metals to a depth of 20 cm. Collecting samples of soil and manure was performed by analyzing the concentrations of copper (Cu), manganese (Mn) and zinc (Zn). This study aimed to determine the possible contamination of land from municipality through comparisons of the data with reference values of law and literature. The results of laboratory analyzes found in soil application of swine manure with average contents of 12,85mg / kg for Cu; 127,58mg / kg for Mn and 2,90mg / kg for zinc. For samples of swine manure, the mean values were 16,14mg / kg for Cu; 48,21mg / kg for Mn and 18,99mg / kg for Zn. It found small accumulations of Cu and Zn in the soils of São João do Oeste, since the Mn in the soil may be the responsibility of the soil-forming rock.