DENDROMETRY CHARACTERISTICS OF EUCALYPTUS UROPHYLLA IN SILVOPASTORAL SYSTEM UNDER DIFFERENT PLANTING SPACINGS WITH BRACHIARIA DECUMBENS

Abstract

The objective of this study was to evaluate the effect of spacing on eucalyptus dendrometric characteristics in silvopastoral system with Brachiaria decumbens. Three eucalyptus spacing were used (3x2, 6x4 and 10x4 m). The randomized block design was used with factorial scheme (3x4) with three densities of planting eucalyptus (3x2, 6x4 and 10x4 m) and four times of evaluation (6, 12, 18 and 24 months after planting). The dendrometric characteristics were evaluated: 0,30 m diameter, diameter at breast height - 1.30 m (DBH), cup diameter, height, biomass per tree and plant survival. It was found positive effect of months of evaluation for the diameter to 0.30 m, cup diameter and height. There were no effects of spacing for the variables DBH, survival and biomass per tree when evaluated at 24 months. There was effect for biomass per hectare being 3x2 m the best treatament. It can be concluded that the planting spacing only affected the biomass per hectare, when evaluated up to 24 months of Eucalyptus urophylla grown in silvopastoral system.