ABSTRACT.- The identification of optimal rotation length of forest crops considering production and environmental perspectives is a major concern for eucalypts since plantations costs are high and nutrient extraction is considerable. This study assessed biomass productivity, energy yield and nutrient use efficiency of E. benthamii,E. dunnii and E. grandis plantations for energy purposes, with densities of 2220, 3330, 4440 and 6660 trees.ha−1 in the first rotation during a period of 76 months.

ABSTRACT.- The identification of optimal rotation length of forest crops considering production and environmental perspectives is a major concern for eucalypts since plantations costs are high and nutrient extraction is considerable. This study assessed biomass productivity, energy yield and nutrient use efficiency of E. benthamii,E. dunnii and E. grandis plantations for energy purposes, with densities of 2220, 3330, 4440 and 6660 trees.ha−1 in the first rotation during a period of 76 months.

CONTENIDO: 1.- Influencia del raleo sobre el crecimiento y propiedades de la madera de Eucalyptus grandis. Karen Báez, Sofía de Freitas, Fernando Resquin, Cecilia Rachid-Casnati, Diego Passarella. -- 2.- Influencia de la poda sobre el crecimiento de Eucalyptus grandis. Fernando Resquin, Cecilia Rachid-Casnati. -- 3.- Resultados de evaluación de ensayo de poda y raleo en Pinus taeda. Daniel Ramírez, Juan Pablo Burgos. -- 4.- Sistemas de apoyo a la gestión forestal. Cecilia Rachid-Casnati. -- 5.- Diagramas de manejo de densidad. Cecilia Rachid-Casnati.