Densitometria de raios x na madeira e carvão de clone de eucalyptus grandis W. Hill ex maiden x eucalyptus urophylla S. T. Blake

Abstract

This research aimed to determine the apparent relative density by X-ray technique of wood and charcoal from a Eucalyptus grandis x urophylla hybrid clone with six years-old. The sampling consisted of the removal of 2 cm diameter (DBH) increment cores, with a motorized borer, in fifty trees distributed in three diameter classes. After the determination of the relative apparent density of the cores, by the x-ray densitometry technique, the samples were carbonized in an electric oven (muffle) and their densities determined by the same technique. The highest apparent density values of the wood using the x-ray technique was found for the diameter classes of 14.1 and 11.4 cm. The relative apparent density values in the samples of charcoal tended to increase in the pith-bark direction in all of the diameter classes.