Evaluación a turno final del efecto del raleo sobre el crecimiento y propiedades de la madera de Eucalyptus grandis

In the present work on Eucalyptus grandis is part of a research project of the National Institute of Agricultural Research (INIA). Its main objective was to evaluate the effect of thinning on growth and the properties of Eucalyptus grandis wood. The selected forest is located in the department of Rivera, and the plantation was carried out in the year 2000. The experimental design of the trial was randomized complete blocks, with three repetitions evaluating different intensities of thinning, reaching final remaining densities of 100,150,200,250, 300, 350 and 400 trees per hectare. The thinning schemes were carried out by combining two thinnings which were carried out in 2002 and 2008. The variables analyzed were diameter at breast height, total height, individual volume, volume per hectare, basic apparent density, apparent density wood current, MOE and MOR. From the analysis carried out, it is concluded that thinning significantly influences the growth variables (DAP, Ht, Vi) where with thinning schemes with lower final populations the highest values of these variables are reached, the opposite occurs with Vha where with schemes of thinning with higher final populations, lower values of the variable are obtained. In addition, thinning has a significant influence on the density of the wood and no significant differences were found with the mechanical properties (MOE and MOR) of bending and compression. Therefore, to obtain quality wood that is determined by large diameters, thinning schemes with a lower final density must be reached, which also causes an increase in the density of the wood. In addition, in the present study, correlations were found between density and mechanical properties, so one property can be inferred from the other.