FUNCIONES DE VOLUMEN TOTAL PARA Eucalyptus grandis Hill ex Maiden IMPLANTADO EN EL NE DE LA PROVINCIA DE ENTRE RÍOS, ARGENTINA ♣ TOTAL VOLUME EQUATIONS FOR Eucalyptus grandis Hill ex Maiden PLANTED IN THE NE OF ENTRE RIOS, ARGENTINA

SUMMARY Data from stem analysis o f Eucalyptus grandis Hill ex Maiden planted in different agroecological regions of the mesopotamia Argentina were used for fitting models for the prediction of volume o.b and u.b. As significant differences were found between the slopes of the models fitted for each region, data from Misiones-NE of Corrientes and data from Concordia-Monte Caseros were modeled independently. The last area has a total of 117 trees felled with this purpose, of this , 17 were used as an independent sample in a validation process of the model. Using multiple regression techniques different models were fitted, including as independent variables D.B.H. and total height and as response variable volume o.b. and u.b. As a consequence of the evaluation of the models, Schumacher-Hall was choice due to its performance. Contrasting estimated values against the independent sample, an error of - 0,076 m3 for volume o.b. and - 0,083 m3 for volume u.b was determined and the relative ...