Influência do espaçamento de plantio e da desrama artificial no crescimento e produção de eucalipto

Abstract

To obtain quality wood in large quantities, it is necessary to use cultural treatments that meet the production purpose. Therefore, this study aimed to evaluate the influence of planting spacing and the application of artificial pruning on growth and production variables of a eucalyptus stand. The experiment was carried out in a stand of Eucalyptus urophylla (clone AEC 144), at 100 months old, in the experimental area of the Federal University of Mato Grosso do Sul, on the campus of Chapadão do Sul, MS. The experimental design adopted was in randomized blocks in a 9 x 2 factorial scheme, testing nine planting spacings/spatial arrangements (3.0 m x 2.0 m; 4.0 m x 1.5 m; 5.0 m x 1.2 m (corresponding to a useful area of 6.0 m2 plant-1); 3.0 m x 3.0 m; 4.0 m x 2.25 m; 5.0 m x 1.8 m (useful area of 9.0 m2 plant-1); 3.0 m x 4.0 m; 4.0 m x 3.0 m; 5.0 m x 2.4 m (useful area of 12.0 m2 plant-1), without and with application of artificial pruning up to six meters in height. The planting spacing associated with the application of artificial pruning promoted changes in the production of wood per tree. The diameter of the trees increased with the planting spacing and the application of pruning. While the height of the trees increased just with the planting spacing.