Shrinkage pattern assessment for black pine juvenile wood delimitation

Juvenile wood is associated with shrinkage and a high probability of warping checks in end products, reducing their value even causing them to be rejected for structural purposes. This work studies the variations yearly caused when passes from green dry state. The methodology proposed based on juvenile (JW) location using annual variations. Pinus nigra Arn. grown different silviculture techniques was chosen study because its characterized by severe problems. characteristic analyzed radial angular directions, which latter evaluating problem rather than commonly used ratio anisotropy. It takes into account measurements obtained disc cut tree trunk at various heights. results were compared segregated JW mature (MW) area densitometry pattern variation methodology. show that higher near pith but stabilizes earlier (3–7 rings) (9–11 rings). Nevertheless, opposite initial occurs shrinkage, low increases annually towards bark until it stabilizes. No clear effect height comparing patterns along bole can defined. Silviculture practices have no significant influence percentage. Shrinkage methodologies differences quantification volume percentage between MW estimation. Results methodology, problems, classifies as good quality uses comparison use On other hand, if classified variation, problems should not sawn.