Soil characteristics such as total organic carbon (TOC), microbial biomass and enzymatic activity are influenced by many factors and have been suggested as suitable indicators of changes caused by different land use systems and soil management. The objective of this study was to evaluate the COT, microbial biomass and enzymatic activity of a typical Inceptisol in agricultural, forest and grassland areas in the Middle Valley of the Paraíba do Sul river (RJ). The systems evaluated were: annual agriculture (Agan); perennial […]

Primavera do Leste is one of the most important farming areas of Mato Grosso State. This study was carried out in a Red-Yellow Latosol to evaluate the microbial biomass and enzyme activities in soils under native vegetation (known as “Cerradão”) and in soils under annual and perennial cropping systems. Soil samples were collected, at the beginning of the rainy season, at two depths (0-5 and 5-20 cm) in areas under a vineyard (row and between rows), annual crops (soybean) and native […]

The distributions of microbial biomass carbon (MBC), enzymes activities and readily mineralizable carbon were evaluated across soil aggregates recovered from a Dark-Red Clayey Oxisol in areas under native Cerrado vegetation and where no-tillage (NT) and conventional tillage (CT) management systems have been established for 21 years. Soil samples were collected at a 0 to 5 cm depth and aggregates were prepared using a wet sieving procedure. The size classes 8.0 to 2.0 mm, 0.5 to 0.25 mm and 0.25 to 0.106 mm and samples denominated […]