Conventional soil maps have acquired increasing importance as inputs for various applications, often without regard to their quality. The aim of this study was to assess and compare soil maps using easily determinable quantitative indicators. Nine soil maps (at different scales, from Rio Grande do Sul) and ArcGIS software were used. Effective scale number (NSN), polygons smaller than the minimum legible delineation (MLD), shape complexity index (S), number of taxonomic classes, soil types, mapping units, and proportion of areas with […]

Two field experiments were conducted on two experimental EPAMIG Farms (Minas Gerias State), in order to evaluate the nutritional coffee status by the nutritional balance index (NBI) supplied by DRIS in response to potassium fertilization. The experimental design was a split plot scheme of randomized blocks, carried out on a Red Latosol distroferric (RLdf) of São Sebastião do Paraíso and a Yellow Red Latosol distrofic (YRLd) of Patrocínio. Three K sources were applied in the plots: potassium chloride (KCl), potassium […]