Sawnwoodyield of Pinus taeda for two log sawing methodologies

Abstract

This work was developed to evaluate the sawnwoodyield of Pinus taeda with two differents methodologies of log sawing called conventional and optimized systems, for a hundred logs with diameters between 18 and 44 cm. The logs were grouped in five diameter classes with twenty logs by class. The half of them were divided in the same number for each sawing system. In the conventional sawing the yield ranged from 35,24% to 43,92%, while in optimized sawing the variation was from 41,65% to 63,04%. The yield was affected by the sawing system used. In conventional sawing, do not have on increase tendency of yield with the logs diameter raise. In optimized sawing system the yield was greater in all classes and showed the tendency of increasing with logs diameter raise. The logs selection and sawing models used to each diameter class (optimized sawing) were efficient methods to increase the yield in sawnwood of pine.