##plugins.themes.bootstrap3.article.main##

Blighia sapida, a Lesser-Used Species is being processed into sawn timber to meet the demand for wood. The knowledge of its wood quality would enhance its effective utilization. However, there is little information known on the physical properties of this species that could enhance its acceptability and optimum utilization. This, therefore, necessitate the need to investigate the physical properties of this wood species.

Three standing trees of B. sapida were purposively felled for this study. Billets of 500 mm were obtained from the wood disc at the base, middle, and top of the tree. Each wood disc was partitioned into three; innerwood, middlewood, and outerwood following specified international standards for the physical properties test (wood colour, proportion of sapwood and heartwood, bark thickness, density, moisture content, and volumetric shrinkage).

B. sapida wood density with a mean value of 709.78±8.88 kg/m3, ranged from (571.59±13.45 to 854.81±7.08 kg/m3. Moisture content percentage of average value 70.62±1.23%, ranged from 53.84±1.40 to 89.00±2.75%. Volumetric shrinkage of average value 15.24±0.25%, range from 13.38±0.66 to 16.89±0.83%. The range of B. sapida wood density value of the study falls within the range that could be categorized as medium density wood of medium construction strength properties. The 1:1.5% tangential–radial shrinkage observed in this study was low, an indicator of a low risk of deformation while seasoning the wood, as the ratios of tangential-radial shrinkage that is high are those over 2.2%.

References

  1. Adekunle VA, Akande SO, Fuwape JA. Impacts of over exploitation on biodiversity yield and sustainable use of tropical rainforest ecosystem: A case study of Omo Forest Reserve, South West Nigeria. Proceedings of the 28th Annual Conf: Forestry Association of Nigeria, pp. 252-263, Nigeria, 2002.
     Google Scholar
  2. Koenig KD. Blighia sapida. In: Prota 7th ed. Vol. 2, Lemmens RHMJ, Louppe D, Oteng-Amoako AA, Ed. Netherlands: Wageningen, 2010, pp. 17-24.
     Google Scholar
  3. Kayumba I. Selected wood properties of two lesser known and lesser utilized indigenous agroforestry species from Kilosa District, Tanzania. M.S. Thesis, Sokoine University of Agriculture, Tanzania, 2015.
     Google Scholar
  4. Winandy JE. Wood properties. USDA-Forest Service, Forest Products Laboratory, Wisconsin Arntzen, Charles J., ed. Encyclopedia of Agricultural Science. Orlando, FL: Academic Press: 554. Vol. 4. October 1994.
     Google Scholar
  5. Oyelere AT, Riki JTB, Adeyemo SM, Majekobaje AR, Oluwadare AO. Radial and axial variation in ring width of Caribbean pine (Pinus caribaea Morelet) in Afaka plantation, Kaduna state, Nigeria. Journal of Research in forestry, wildlife & environment. 2019; 11(3): 81-89.
     Google Scholar
  6. Ogunsanwo OY, Akinlade AS. Effects of Age and Sampling Position on Wood Property Variations in Nigerian Grown Gmelina arborea. Journal of Agriculture and Social Research (JASR) Vol. 11, No. 2, 2011. Pp 103-112.
     Google Scholar
  7. Annual Book of Standards, Vol. D09, American Society for Testing and Materials Wood, Philadelphia, PA, 1991, pp. 12-13.
     Google Scholar
  8. Falemara BC, Owoyemi JM, Olufemi B. Physical Properties of Ten Selected Indigenous Wood Species in Akure, Ondo State, Nigeria. Journal of Sustainable Environmental Management. 2012; 4: 16-23.
     Google Scholar
  9. Riki JT, Sotannde OA, Oluwadare AO. Selected Physical Properties and Microscopic Description of Ziziphus mauritiana Lam. Wood in Sudano-Sahelian Region of Nigeria. Asian Journal of Applied Sciences. 2019; 7(6): 758.
     Google Scholar
  10. Bieker D, Rust S. Non-destructive estimation of sapwood and heartwood width in Scots pine (Pinus sylvestris L.). Silva Fennica. 2010; 44(2): 267–273.
     Google Scholar
  11. Olaoye KO, Ariwoola OS, Ibiyeye DE. Selected Physico-Mechanical Properties of Aningeria robusta (A.Chev) Wood for the Manufacture of Talking Drum. Journal of Agriculture and Veterinary Science (IOSR-JAVS). 2016; 9(2): 58.
     Google Scholar
  12. Areo OS, Omole OA, Adejoba AL. (2020). Evaluation of Selected Physical Properties of Breadfruit Wood (Artocarpus altilis, Parkinson ex. F.A. Zorn) Fosberg Grown in the South-western, Nigeria. Trends in Applied Sciences Research. 2020; 15:226-234.
     Google Scholar
  13. Sundqvist B. Colour changes and acid formation in wood. Ph.D. Thesis. Division of Wood Material Science; 2004.
     Google Scholar
  14. Regis BM. Chapter 2: Structure of Wood. From Wood handbook—Wood as an engineering material. Gen. Tech. Rep. FPL–GTR–113. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 463 p. 1999.
     Google Scholar
  15. Taylor AM, Cooper PA. The effect of pre harvesting girding on selected properties of red maple and eastern larch wood. Fiber sci. 2002; 34(2): 212-220.
     Google Scholar
  16. Sotannde AO, Anguruwa GT, Ishaya D. Wood Quality Study of 9-Year Old Plantation Grown Khaya senegalensis in Sudano-Sahelian Environment of Borno State Nigeria. Journal of Forestry Research and Management. 2015; 12: 95-112
     Google Scholar
  17. Taylor AM, Gartner BL, Morrell JI. Heartwood formation and natural durability: A review. Department of Wood Science and Engineering Oregon State University Corvallis, OR 97331(Received April 2002). pp. 586-611.
     Google Scholar
  18. Philips EWJ. The inclination of the fibrils in the cell wall and its relation to the compression strength of timber. Empire Forestry J. 1941; 20: 74-78.
     Google Scholar
  19. Sotannde OA, Riki JTB. Wood Quality Studies of Some Wood Species in Sudano-Sahelian Environment of Borno State, Nigeria. Journal of Research in Forestry, Wildlife & Environment. 2019; 11(3) 8-19.
     Google Scholar
  20. Kityo PW and Plumptre RA. The Uganda timber user’s handbook: A guide to better timber use. Commonwealth Secretariat, London, UK, 1997.
     Google Scholar
  21. Appiah-Kubi E, Kankam CK, Adom-Asamoah MA. Bending and Modulus of Elasticity Properties Of 10 Lesser-Used Timber Species In Ghana. CSIR-Forestry Research Institute of Ghana; 2012, pp. 23.
     Google Scholar
  22. Quartey GA. Anatomical Properties of Three Lesser Utilised Ghanaian Hardwood Species. Materials Sciences and Applications. 2015; 6: 1111-1120.
     Google Scholar
  23. Akachuku AE. Agric. Research Bulletin, Vol. 1 No. 2, University of Ibadan, Nigeria, 1980, pp. 5-6.
     Google Scholar
  24. Fuwape JA, Fabiyi JS. Variation in strength properties of plantation grown Nauclea diderichii wood. Journal of Tropical Forest Products. 2003; 9(1): 45-53.
     Google Scholar
  25. Izekor DN, Fuwape JA, Oluyege AO. Effects of density on variations in the mechanical properties of plantation grown Tectona grandis wood. Archives of Applied Science Research. 2010; 2(6): 113-120.
     Google Scholar
  26. Sotannde OA, Oluyege AO, Adeogun PF, Maina SB. Variation in Wood Density, Grain Orientation and Anisotropic Shrinkage of Plantation Grown Azadirachta indica. Journal of Applied Sciences Research. 2010 6(11): 1857.
     Google Scholar
  27. Riki JTB, Adeyemo SM, Majekobaje AR, Oyelere AT, Oluwadare AO. Density variation in axial and radial positions of Caribbean Pine (Pinus caribaea Morelet) grown in Afaka, Nigeria. J. Agric. & Envir. 2019; 15(2): 163-171.
     Google Scholar
  28. Larson PR. Wood Formation and the Concept of Wood Technology; New York: MacGraw Hill Book, 1969, vol. 1.
     Google Scholar
  29. Zobel BJ Van Buijtenen JP. Wood variation its causes and control; Berlin: Springer-Verlag, 1989, pp. 354-358.
     Google Scholar
  30. Oyagade AO, Fasulu SA. Physical and mechanical properties of Trilepisium madagascariensis and Funtumia elastica wood. J. of Trop. For. Sci. 2005; 17(2): 258-264.
     Google Scholar
  31. Kiaei M, Bakhshi R. Radial variations of wood different properties in Diospyros lotus. Forest Systems. 2014; 23(1): 171-177.
     Google Scholar
  32. Akpan M. Olufemi B. Quantitative studies on density of neem (Azadirachta indica A.Juss) wood for utilization as timber in northeastern Nigeria. University of District Columbia UDC630*33/.35/669, 2007 pp. 1-7.
     Google Scholar
  33. Jacobsen AL, Agenbag L, Esler KJ, Pratt RB, Ewers FW, Davis SD. Wood density, biomechanics and anatomical traits correlate with water stress in 17 evergreen shrub species of the Mediterranean-type climate region of South Africa. Journal of Ecology. 2007; 95: 171–183.
     Google Scholar
  34. Hugo IMC, Cynthia SJ, Susana E. Schenk HJ. Wood anatomy and wood density in shrubs: Responses to varying aridity along transcontinental transects. American Journal of Botany. 2009; 96: 1388-1398. doi:10.3732/ajb. 0800237.
     Google Scholar
  35. Barker DA, Philips OL, Laurance WF, Pitman NCA, Almeida S, Arroyo L, et al. Do species traits determined patterns of wood production in Amazonian forests? Biogeosciences. 2009;6: 297-307.
     Google Scholar
  36. Okon KE. Variations in specific gravity and shrinkage in wood of 25 – year old Gmelina arborea in Oluwa forest reserve, south west Nigeria. Archives of Applied Science Research. 2014; 6(4): 271-276.
     Google Scholar
  37. Noah AS, Abiola JK, Ayeni OD, Bamidele OD. Comparative Assessment of selected Acoustic Properties of Talking Drums Made from Wood of Gmelina arborea (Roxb) and Brachystegia eurycoma (Harms). Journal of Multidisciplinary Engineering Science and Technology (JMEST). 2012; 1(5): 22-27.
     Google Scholar
  38. Ogunbajo AB, Adigun MA, Alaboru FO. Sustainability and stress properties of selected hardwood timber section in Lagos, Nigeria. Ideal Journal of Engineering and Applied Sciences. 2016; 2(1): 21-27.
     Google Scholar
  39. Aguma Q, Ogunsanwo OY. Selected Physical and Mechanical Properties of Stem and Branch Woods of Khaya grandifolia. M.S. Thesis, University of Ibadan, Nigeria, 2015.
     Google Scholar
  40. Emerhi EA, David-Sarogoro N. Spatial and volumetric shrinkage of Terminalia catappa (linn) wood in Bunu Tai, Rivers state, Nigeria. Gsj. 2019; 7(8): 951.
     Google Scholar
  41. Kumar, B.M. Physical and mechanical properties of three agroforestry tree species from Kerala, India. Journal of Tropical Agriculture. 2006; 44 (1-2): 23-30.
     Google Scholar
  42. Bodig J, Jayne BA. Mechanics of wood and wood composites. Florida: Krieger Publishing Company; 1993 ISBN-13: 9780894647772. 736.
     Google Scholar
  43. Schniewind AP. Concise Encyclopedia of Wood and Wood-based materials. Pergamon Press, 1989, pp. 248.
     Google Scholar
  44. Rijsdijk JF, Laming PB. Physical and related properties of 145 timbers. Information for practice; Netherlands: Kluwer Academic Publisher, 1994.
     Google Scholar
  45. Panshin AJ, de Zeeuw C. Textbook of Wood Technology. 5th ed. MacGraw-Hill Book Company; 1980, pp. 722.
     Google Scholar
  46. Kollman FPP, Cote WA. Principles of Wood Science and Technology; Berlin: Springer-Verlag, 1986, pp 592.
     Google Scholar
  47. Harte A. Introduction to timber as an engineering material. ICE Manual of Construction Materials, Institution of Civil Engineers, 2009. doi: 10.1680/mocm.00000.0001
     Google Scholar
  48. Josue J. Some wood properties of Xylia xylocarpa planted in Sabah. Sepilok Bulletin. 2004; 1: 1-15.
     Google Scholar