Massa específica básica e massa seca de madeira de Eucalyptus grandis sob o efeito do espaçamento de plantio e da posição axial no tronco

Abstract

The basic density and dry mass of wood and bark of Eucalyptus grandis W Hill ex-Maiden of growing under twelve tree spacing were investigated. Thirty six trees (three per unit), with age of approximately ten years, coming from experimental units of AFUBRA, were used. Disks at base, DBH, 25, 50, 75 and 100% of trunk commercial height were taken from each tree for determination of wood and bark basic densities. Except for the smaller tree spacing, there was a decrease in basic density and dry mass of wood and bark with increasing planting spacing. The between lines tree spacing that produced the larger values of the studied variables were from 1,5 to 2 m.