This research aims at evaluating the age and diametric class effects on levels of longitudinal residual strain in trees of Eucalyptus dunnii originated from commercial plantation. The appraised material came from Procopiak Company-Plywood and Package, located in Canoinhas, State of Santa Catarina-Brazil. The growth stress levels were measured indirectly through the "CIRAD-Forêt" method. The results indicated that the levels of longitudinal residual strain (DRL) showed a tendency for linear increase with age. The diametric class effect gave negative correlation with DRL for 8 and 13- year old trees.
Eucalyptus dunnii; wood; tree age; growth stress
