Determinação das propriedades físicas do solo em função do uso e ocupação em Caçapava do Sul - RS

Determination of physical soil properties by use and occupation in Caçapava do Sul – RS

Abstract

Concern about soil quality has increased significantly, as its use and intensive mobilization reduce the ability to maintain good production. Management systems with vegetation removal, soil exposure, use of chemicals, machine traffic and animal trampling alter the soil structure, decreasing physical quality. This study aimed to determine the soil quality in the municipality of Caçapava do Sul - RS, through the characterization of physical attributes, performing a comparative analysis in different uses: soybean cultivation and livestock (native field). The physical attributes determined were: soil density, particle density, total porosity and hydraulic conductivity. The analyzes were performed in four replications performed in quadruplicate and the results analyzed by the Statistica 7.0 software. In the soybean planting area, in the layer between 0.25 and 0.35 m, the soil density showed higher values and lower porosity, evidencing the effect of soil compaction resulting from the transit of machinery. Regarding the particle density, the native field area had the lowest value in the surface layer. In hydraulic conductivity, both presented negative results. The results found demonstrate that the studied soils behaved in a similar way in relation to the evaluated parameters.