Senior Research Officer, Forestry Research Institute of Nigeria
WOOD QUALITY OF SECONDARY WOOD SPECIES IN TIMBER MARKETS
The rapid growth of the timber industry has brought about new challenges relating to its future competitiveness and sustainability. Declining availability and imbalance in the demand-supply of many valuable timber species in the timber market is a matter of urgent concern. The known species are getting depleted. Consequently, to increase the level of utilization of the secondary timber species, enhance customer’s satisfaction and provide reliable knowledge on the quality of these timber species with respect to important properties, this study becomes imperative. This study investigated wood quality as influenced by density and dimensional stability of four economic and commercial timber species in Jos timber markets. Planks of the timber species comprising of Khaya senegalensis, Milicia excelsa, Anogeissus leiocarpus, Triplochiton scleroxylon were collected from Katako and Building materials timber markets in Jos metropolis. The wood planks were processed and trimmed into standard size of 20 x 20 x 60mm3 collected along the longitudinal axis of the timber species from the top, middle and bottom. Parameters assessed for dimensional stability include density and volumetric shrinkage. The experiment was subjected to 2 x 3 factorials in completely randomized design. The result of findings might be of significant standard for quality assessment and quality level for timber end-use property distinction.