Abstract

CHAPARRO AGUILERA, Laura Patricia; RIVEROS INSFRAN, Ulises; RAMIREZ HAEDO, Delia  and  ZARATE CESPEDES, Felicia. Physical properties and utilization potential of Eucalyptus urophylla × E. camaldulensis wood as a function of stem height. Investig. Agrar. [online]. 2025, vol.27, n.2, e2702840.  Epub Dec 12, 2025. ISSN 2305-0683.  https://doi.org/10.18004/investig.agrar.2025.2702840.

Forest plantations with the Eucalyptus genus are widely distributed due to the versatility of species and derived hybrids grouped in this taxon. Paraguay has more than 200,000 hectares planted, predominantly with eucalyptus, and the national forest industry uses a high percentage of wood from exotic species as raw material. To optimize the utilization of these forest resources, it is essential to characterize the physical properties of wood according to its position in the stem. With the objective of determining the physical properties of Eucalyptus urophylla × E. camaldulensis wood at different stem heights and establishing its utilization potential, wood samples were obtained at 25, 35, 45, and 55% of the total height from seven-year-old individuals from a commercial plantation in Caazapá. Moisture content was determined according to UNE EN 13183-1 standard, green and basic apparent specific weight according to NP No. 115 standard, and anisotropy coefficient according to NP No. 116 standard. ANOVA at 5% significance and regression analysis demonstrated that the sampling height level was significant for the anisotropy coefficient and basic apparent specific weight, respectively. These findings suggest that wood can be classified for utilization in the pulp industry and in structural products according to the height of material extraction.

Keywords : density; moisture content; forest industry; eucalyptus; anisotropy.

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