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Radial Variation in Wood Properties of Plantation grown Terminalia myriocarpa Heurck and Muell-Arg in Nagaland, India

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Author Affiliations

  • 1Department of Forestry, North Eastern Regional Institute of Science and Technology, Nirjuli-791109, Arunachal Pradesh, INDIA

Res. J. Recent Sci., Volume 3, Issue (ISC-2013), Pages 9-14, (2014)

Abstract

The present study was conducted on five 16 years old trees of T. myriocarpa collected from plantation located at Ungma village in Mokokchung district of Nagaland. The selected wood properties were fibre length, vessel length, fibre length increment and wood density. The main aim of the study was to evaluate radial variation in wood properties from pith to bark for effective utilization. The mean range of fibre length, vessel length, fibre length increment and wood density were 736.68µm -1300.03 ± 33.56µm, 341.10µm -431.44 ± 14.71µm, 381.31 µm -825.85 ± 19.60 µm and 0.33-0.53 ± 0.38 respectively. ANOVA carried out among trees showed non-significant variation in all wood properties. Wood density, fibre length and fibre length increment increased from pith to 40mm. and afterwards it remained more or less constant. There was gradual increase in vessel length from pith to bark. The regression models for fibre length, fibre length increment, vessel length and wood density were Y=675.26+110.87lnX, Y=312.96+100.28lnX, Y=389.76+0.31X and 0.30+0.04lnX respectively. Distance from pith had significant and positive correlation with fibre length, fibre length increment and wood density while the relationship between distance from pith and vessel length was too weak to be significant. On the basis of radial variation in wood properties, the boundary between juvenile wood and mature wood could be marked at 40mm. from pith for all selected parameters. The present study revealed that the plantation timber of Terminalia myriocarpa could be suitable for different end uses at this age.

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