Understanding the agricultural potential of a soil is often based only on interpretation by univariate analyses, and this may increase the scale of the problems when selecting appropriate soil management practices. Thus, multivariate analysis is an alternative since it is a set of procedures aimed at grouping individuals and discriminating between these groups. It also serves as an instrument for selection of variables in that those with the highest weight in the construction of the first principal components are likely […]

In Brazil, grazing mismanagement may lead to soil and pasture degradation. To impede this process, integrated cropping systems such as silvopasture have been an effective alternative, allied with precision agriculture based on soil mapping for site-specific management. In this study, we aimed to define the soil property that best sheds light on the variability of eucalyptus and forage yield. The experiment was conducted in the 2011/12 crop year in Ribas do Rio Pardo, Mato Grosso do Sul State, Brazil. We […]

Common bean yield was analyzed in relation to some physical properties of a dystroferric Red Latosol (Typic Acrustox), in the 2006/07 growing season, in Selviria, state of Mato Grosso do Sul, Brazil. The no-tillage crop under center-pivot irrigation was cultivated with a high technological management level. The objective of this work was to select the most representative soil properties to explain the variability in agricultural productivity. A geostatistical grid was installed for soil and plant sampling at 117 points, in […]

Soils from the Vale do Rio Doce region in Ipatinga, Nova Era e Guanhães counties, State of Minas Gerais, Brazil, under reforestation with Eucalyptus grandis, were studied. Eight forest sites with soils from different taxonomic classes were selected and detailed mineralogical characterization and evaluation for nutrient reserve potential were conducted in 1991. The soils studied were mineralogically classified as: Kaolinitic-non sesquioxidic (2 and 5); kaolinitic-sesquioxidic (1); gibbsitic-sesquioxidic (4, 6 and 7); hematitic (3) and gibbsitic (8). The main silicate clay […]