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Maderas. Ciencia y tecnología

versão On-line ISSN 0718-221X


SOTO, L; VALENZUELA, L  e  LASSERRE, J.P. Effect of initial planting density in dynamic modulus of elasticity in standing trees and logs of 28 years old radiata pine plantation in sandy soil, Chile. Maderas, Cienc. tecnol. [online]. 2012, vol.14, n.2, pp.209-224. ISSN 0718-221X.

The influence of initial planting density (DPI) on the dynamic modulus of elasticity (MOEd) was examinated at a 28 years old Pinus radiata D. Don spacing experiment with four treatments (2500, 1667, 833 and 625 stem·ha-1) growing on sandy soil, in the Biobío Region, Chile. The MOEd acoustic technology was determined using the method of time of flying (Tv) for standing trees and the resonance method (Res) for two logs of 5 m long, extracted from the tree base to the top of each tree. MOEd was not significantly influenced by DPI in high initial stocking treatments (2500, 1667 and 833 stem·ha-1), both standing trees and logs level. In contrast, the lowest initial stocking treatment (625 stem·ha-1) had the highest MOEd, significantly different in standing trees and the first the log, and similar between the first and second log.

Palavras-chave : Dynamic modulus of elasticity; initial planting density; Pinus radiata.

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