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<h1>This work was accomplished with the objective of selecting a volume equation with the use of dummy variables for <em>Acacia mearnsii</em> De Wild, in the area of Central Depression of Rio Grande do Sul. In the study there were sampled 750 trees distributed in three places, in ages varying from 3,5 to 7,5 years. The statistical parameters indicated the Stoate Model as the one with the best precision. The fit of this equation with the use of dummy variables was shown to be efficient because it allowed to identify tree growth differences among places, which suggest that the fit of volume equations should be separate to each place, as a way of minimizing errors of volume estimation.</h1

Utilização de variáveis dummy em equações de volume para <i>Acacia mearnsii</i> De Wild.