Effect of differences in climate on growth, wood, and pull, properties of nine eucalypt species at two sites

Growth and wood properties of trees from nine eucalypt species in trials at two different sites were measured to evaluate the influence of environment . A large difference in mean annual temperature between the two sites had l ittle effect on species ranking for most properties. There were significant differences between sites fro growth (diameter, height, and volume), wood (lignin, pentosans, and density) and pulp (yield, alkali consumption, rate of delignification, and brightness) properties, but a greater proportion of the variation occurred between and within species for all properties excep t wood density. E. fraxinoides, E. smithii, and E. oreades ere the most desirable species b ecause of high pulp yield, fiber yield, and brightness but low kappa number and alkali consumption. There was a significant site-by-species interactio n for mass of fiber per tree as well as a significant difference between sp ecies, suggesting that improvement could be best achieved through a combina tion of selecting between trees and species as well as by matching the spec ies to the growing site. Improvements in the other important pulp propertie s mostly depended on species selection for a particular site.