ABSTRACT Application of organic fertilizers of animal origin can increase organic carbon in the soil and increase its content in macroaggregates. This study aimed to evaluate carbon contents and fractions in two classes of soil aggregates in response to the application of organic and mineral fertilizers in an integrated crop-livestock system. The experiment was established in Concórdia, Santa Catarina State, in a Nitossolo Vermelho Eutroférrico típico, (Rhodic Kandiudox according to the WRB system) (0.00-0.05, 0.05-0.10, and 0.10-0.20 m), in an […]

In the semiarid region of Brazil, inadequate management of cropping systems and low plant biomass production can contribute to reduce soil carbon (C) and nitrogen (N) stocks; therefore, management systems that preserve C and N must be adopted. This study aimed to evaluate the changes in soil C and N stocks that were promoted by agroforestry (agrosilvopastoral and silvopastoral) and traditional agricultural systems (slash-and-burn clearing and cultivation for two and three years) and to compare these systems with the natural […]

Coffee farmers from the physiographic region known as the Upper San Francisco River, MG, Brazil, have been adopting a new conservation management system with effects on the soil physical quality that require evaluation. The objective of this work was to study the physical quality of a Latosol and a Cambisol in contiguous areas under commercial coffee plantations. The soil of a transition area at the top of the landscape was classified as latossolic dystrophic Tb Haplic Cambisol (Inceptsol) and the […]