The Amazon tropical forest deforestation and the agricultural use of soils can lead to soil physical, chemical and biological degradation. This study evaluated land use and tillage systems in Yellow Latosol, very clayey, by physical attributes determinated in 0.0-0.2 and 0.2-0.4 m depths, in Universidade do Amazonas, Manaus (AM). The land used and tillage systems were: corn, orange, peach palm, guarana, pasture, capoeira and forest. Deforestation, slash-burning and mechanizated operation of tillage and manage were used on corn, orange, peach palm and pasture systems. Soil properties (particle size, clay flocculation degree, organic matter, particle density, bulk density, total porosity, macro and microporosity, initial and basic infiltration) were evaluated after 6 to 12 years of management. The experiment was a completely randomized design with three replicates. Capoeira, guarana, corn, orange, peach palm and pasture, in this order, induced soil physical attributes degradation compared with forest, presented greater values of soil bulk density and lowest macroporosity, water infiltration and organic matter.
organic matter; physical properties; use systems
