Qualidade da madeira serrada de cinco espécies de Eucalyptus resistentes à geada.

Verediana Müller, Bruna; Pereira da Rocha, Márcio; Klitzke, Ricardo Jorge; Bayestorff da Cunha, Alexsandro; Moreira da Silva, José Reinaldo; França, Morgana Cristina; Nicoletti, Marcos Felipe

Eucalyptus cultivation in the South Brazil is still limited due to the occurrence of frost and the limited number of species adapted to this condition. So, this study aimed to evaluate the wood quality of five Eucalyptus species cultivated in a frost occurrence region. Eucalyptus benthamii, Eucalyptus deanei, Eucalyptus dorrigoensis, Eucalyptus dunnii and Eucalyptus smithii trees, 18 years old, were sectioned into logs, which were divided into diametric grades of (1) 20,1 to 25,0 cm; (2) 25,1 to 30,0 cm and (3) greater than 30,0 cm. All the logs were submitted to the sawing, producing boards with tangential faces. Before and after the natural drying, the intensities of splits and warping (spring, bow and cupping) of the boards were determined. The results indicated that the log diameter had little influence on the lumber quality. The drying process increased splits and spring intensities, without tendency for bow intensity. The lowest defect intensities were presented by Eucalyptus dunnii and Eucalyptus deanei lumber. However, the other evaluated species also showed acceptable defect intensities, suggesting that it can be used for lumber production, in frost occurrence region.

Brazilian Journal of Wood Science / Revista Ciência da Madeira, 2019, Vol 10, Issue 1, p57

2177-6830

Academic Journal

10.12953/2177-6830/rcm.v10n1p57-70