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Acacia mangium species presents silvicultural potential in the country due to its good adaptability and fast growth. It is widely used in renovation of disturbed areas; however, there are few studies on the technological properties of its wood, especially in younger trees. Thus, the purpose of this research was to evaluate the density, extractives content, pH value and buffer capacity of the Acacia mangium wood, as well as to describe it anatomically. 4.2-year-old trees were used; they were planted in reforestation mixed with the Eucalyptus urophylla × grandis hybrid, located in Santa Barbara, State of Minas Gerais. Chemical, physical and anatomical analyses of the wood at different stem heights were carried out. The results showed an average wood basic density of 0.34 g.cm–3. The wood did not show high acidity; the pH and buffer capacity ranged from 5.45 to 5.90 and from 0.05 to 0.104 mmolNaOH, respectively. The extractives found presented low levels, indicating no significant variation along the tree. The anatomical characters presented small variations in behavior when compared to older trees.

Caracterização tecnológica da madeira de Acacia mangium Willd em plantio consorciado com eucalipto