Qualidade da tora e da madeira de clones de Eucalyptus para utilização na indústria de madeira serrada

Abstract

The study was conducted to evaluate the potential of five new eucalyptus clones for lumber production. Logs of three clones of the hybrid of Eucalyptus grandis x Eucalyptus urophylla, one clone of Eucalyptus grandis and one clone of Eucalyptus urophylla were used. In all genetic materials were evaluated the core percentage and the top splits index for the logs and the spring, bow and splits for the green and dry boards. The clones had a significant influence on the logs and lumber quality. Considering spring (green and dry) and bow (green), all clones were classified with light warping. After sawing, the clone 3 (Eucalyptus grandis x Eucalyptus urophylla), clone 4 (Eucalyptus grandis) and clone 5 (Eucalyptus grandis x Eucalyptus urophylla) presented light splits. Therefore, the clones 3, 4 and 5 proved to be potential sources of raw material for lumber production.