1.0 INTRODUCTION                                             ÂÂ
Wood presents a unique challenge in use because of its variability and the directional nature of its basic structure. These are the sources of some of its attractive features but they require also that they be handled and applied in ways appropriate for good end use. The ways in which the structural features of the particular species determine their properties and limit the uses and applications can be studied more precisely (Jayeolaet al., 2009). Many attempts have been made to define wood quality (Keith 1985), but the definition proposed by (Mitchell 1961) appears to be the most widely cited: “Wood quality is the resultant of physical and chemical characteristics possessed by a tree or a part of a tree that enable it to meet the property requirements for different end productsâ€Â.
As wood properties affect various aspects of the manufacturing process, wood quality must be defined in terms of the value of its end products. In addition, the definition needs to include serviceability, and cover attributes of interest to end-users, which may or may not have a direct impact on manufacturing, but will continue to matter long after the product has been sold and installed.  Wood fibres are usually cellulosic elements that are extracted from trees, straw, bamboo, cotton seed, hemp, sugarcane and other sources.
Because wood fibre is a natural material, wood fibre products contain many of the natural characteristics of wood in nature. This study is based on effect of age series on fibre characteristics of Gmelin aarborea.1.2. Statement of problemWood has always been a material of great importance to mankind. It is highly versatile. The demand for wood has been on the  increase for various uses. Unfortunately, most of the wood species in the natural forest are going to extinction due to high demand by user leading to over exploitation. Therefore, the use of plantation grown wood species is a step toward meeting the demand and consumption of wood and wood products. Initially, G.arborea wood was established in the plantation with the aim of supply fibrous raw material to the then established pulp and paper mills in Nigeria.
Based on the targeted end-use of G. arborea, several studies have been conducted on its fibre characterization. However, there is no available information on the effect of plantation age on fibre characteristics of this wood species. Therefore, this study sought to bridge this knowledge gap.
1.3 ObjectivesThe general objective is to investigate the influence of plantation age on fibre characteristics of Gmelina arborea on wood utilization.The specific objectives are to: