Abstract The technological characterization of wood is essential for its proper market insertion and appropriate end-use applications. In Brazil, wood produced in agroforestry systems remains underexplored, highlighting the need for studies that support its valorization and rational use. Therefore, this study aimed to characterize and compare the colorimetric properties of wood from Eucalyptus grandis × Eucalyptus urophylla , Schizolobium parahyba (Vell.) Blake, Peltophorum dubium (Spreng.) Taub., and Parapiptadenia rigida (Benth.) Brenan grown in an agroforestry system, as well as to evaluate their relationships with chemical, energy, and physical properties. A wood disc was collected from each tree at 1.30 m above ground level for color determination on the transverse, radial, and tangential planes, in addition to chemical composition analyses (lignin, extractives, holocellulose, and ash content), energy properties (higher heating value, fixed carbon, and volatile matter), and a physical property (basic density). Significant differences were observed among species for the colorimetric parameters, with Schizolobium parahyba showing the highest lightness values ( L* = 81.55), while Parapiptadenia rigida presented the highest reddish ( a* = 15.20) and yellowish ( b* = 32.25) pigmentation intensities. In addition, Parapiptadenia rigida exhibited the highest basic density (0.652 g cm −3 ), whereas Eucalyptus grandis × Eucalyptus urophylla showed the highest higher heating value (4753 kcal kg −1 ). The colorimetric parameters L* and a* effectively distinguished the studied species and showed significant correlations with physical, chemical, and energy-related properties of the wood, indicating their potential use as non-destructive indicators of wood quality and technological and energy performance. These findings demonstrate that wood from agroforestry systems exhibits technological performance comparable to that of conventional plantations.
Nardini et al. (Mon,) studied this question.