Análise das produções científicas sobre os impactos dos dejetos suínos no solo

Abstract

Swine production is one of the main economic activities developed by the agricultural sector in Brazil, generating income, employment and development opportunities for people but having an aspect that may reduce the benefits generated directly, the pig manure. This work evaluated scientific researches in the form of abstracts, articles, dissertations and theses about impacts of pig manure in soil. Examining the main contaminating materials and what risks may cause to the environment, even sought information on the productions of using pig manure, States that research more, which the most discussed topics, the most studied elements and types of soils studied. The result was the number of 95 publications. The year of 2010 had the highest number of productions, southern region has more production in Brazil (Rio Grande do Sul 41%, Santa Catarina34% and Paraná 17%), because it is the center of production. The most analyzed elements were nitrogen , copper, zinc, phosphorus and potassium in the main Brazilian soils Ultisols, Oxisols, Cambisols and Nitossolos. The impacts are presented as positive on soil when limited quantities of pig slurry were used. When concentrations are exceeded contamination can occur in surface and ground water and negative impact to other environmental organisms, including humans.