Distribuição espacial de propriedades físicas do solo em megaparcelas com e sem terraceamento

Abstract

The use of terracingin agriculture is an efficient way to control soil erosion, however, with the expansion of the practice of abandoning terraces by farmers to optimize mechanization, it is essential to evaluate the interference of this in the soil characteristics and the trends of their behavior along the area and profile. In this way, the work aimed todetermine the occurrence of behavioral differences between themega-plotswith and without terraces, as well as their spatial variability and to evaluate the correlation between hydraulic conductivity and soilmacroporosity. The experimental area is located at the Federal Technological University of Paraná, Campus Dois Vizinhos, where sampling was carried out at 32 points of eachmegaparcelaat depths of 0-0.10;0.10-0.20;0.20-0.30 and 0.30-0.40m. The data is amsubjected to statistical analysisspecification,the geostatistical and the analys is bivariate correlation.The Ksat showed high spatial variability due tothehigh heterogeneity of the soil and its structural changes being observable formation of three ranges and values along the slope of the relief Ksat in megaparcela ST at a depth of 0.10-0.20m, in addition to a visual relationship in the maps of spatial distribution between the two variables analyzed and moderate correlation resulting from the analysis of bivariate correlation.