WOOD VOLUMETRY OF Tachigali vulgaris PURE PLANTATIONS IN DIFFERENT PLANTING SPACINGS

The aim of this study was to develop volumetric equations for tachi-branco trees (Tachigali vulgaris L. G. Silva & H. C. Lima), by assessing the effect initial planting spacing in volume estimates, as well developing an equation estimate equivalent diameter (deq). Data are from experiment located north Pará. conducted with randomized blocks design, being three six treatments each. most used models were assessed two distinct situations: considering each trunk a tree and using deq independent variables model. need individual tested. In addition, proposed. use provided more precise accurate estimates regarding at breast height. Among tested, Schumacher-Hall model selected. Through identity test, can be Tachigali vulgaris, regardless spacing. estimated via minimum maximum diameters trunks. percentage differences hectare obtained measurement all trunks only 5% without loss production accuracy per unit area