O uso da geoestatística na avaliação de atributos físicos do solo em sistema de cultivo de soja.

Abstract

Knowledge on spatial dependence characterization of soil properties can help plan and optimize research studies, and be used for commercial agricultural cultivation. The objective of this work was to evaluate the spatial variability of physical attributes of a RHODIC HAPLUSTOX under soybean cultivation. The research was carried out at Fazenda Santa Rosa, in the township of Nova Mutum, MT, Brazil. The experimental plots were delimited by a 100 × 50 m grid, totaling 45 sampling plots. The following attributes were studied: soil mechanical resistance to penetration, bulk density, and water content of soil, at two depths (0.0 – 0.10 m and from 0.10 – 0.20 m). Soil management changed the spatial dependence of the soil attributes on the surface layer, increasing the variability of the soil's physical attributes in relation to the deeper layer.