Sazonalidade do incremento em diâmetro de eucalipto em sistema de integração lavoura pecuária floresta

Abstract

This work was conducted in experimente of integrated crop-livestock-forestry in Sinop-MT, and had as its objective the to evaluate the seasonal increment in diameter of hybrid Eucalyptus urograndis x Eucalyptus Urophylla, clone H13, using dendrometric bands installed at breast height. He studied the incremente and its relationship with the environmental variables, with the planting arrangement, the face of the sun, and the presence or absence of cattle in the area, and assess the level of damage caused by the animals. Assessments were made monthly for one year from the third year of planting trees. The trees were planted in double spatial arrangement spaced 3 x 2 m between trees and 52 m between trees tracks, and triple spatial arrangement spaced 3 x 2 m between trees and 15 m between trees ranges. The results allowed us to conclude that there was effect of environmental variables on the seasonal increment in circumference of the eucalyptus trees, and correlation with precipitation, relative humidity and soil moisture. Damage levels, different arrangements of planting and the face of sun exposure had no significant effect on the increase in diameter.