Abstract Most of the decay in an old-growth shortleaf and loblolly pine stand in Texas and a second-growth stand in Arkansas was caused by Fomes pini , which entered the trees through branch stubs. The percentage of loss due to decay was computed on the bases of board foot log scale, cubic content,mill tally, and dollars. There was fair agreement between cull per cents on log scale and mill tally bases, but on the basis of cubic content the per cents were much lower. The highest percentage of cull was in the Texas shortleaf pine; 2.4 per cent due to decay and 3.9 from all causes. Perhaps of greatest interest in this study was finding that the percentage loss in value, expressed in dollars, considerably exceeded the percentage of cull based on log scale. This resulted from the practice of making no volume deduction for sound red-heart, in scaling. This defect, although sound,causes boards to be degraded. This financial loss is not reflected in log scale cull.
Hepting et al. (Thu,) studied this question.