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Determination of growth stresses indicator, moisture profiles and basic density of clonal eucalyptus wood

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Abstract

Liberation of growth stresses during cutting and sawing prevents the use of eucalyptus as working timber. The occurrence of log-end cracks and planks, due to the release of growth stress pre-existing in the standing tree, causes severe damage at the early stage of wood transformation. In this study, we determine the GSI of two clonal eucalyptus wood originated from Gharb Mâamora plantations, so as to have an idea about the occurrence of cracks before first wood transformation. The measurements of growth stress indicator (GSI) were performed on six trees of each clone by the single-hole method. Changes in moisture and basic density were carried out on wood discs. Results of GSI have showed the existence of variability in the distribution of GSI within the studied trees. Clonal eucalyptus trees exhibit a high nervousness illustrated by high GSI values associated with the presence of reaction wood. Changes in moisture and basic density of wood discs for these clones are variable from the core to the periphery. The important GSI values and moisture content and basic density gradients are responsible of splitting, cracks and distortions observed after cutting and/or sawing.

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Authors and Affiliations

  1. LaMCScI, Molecular Spectronomy, Optics and Laser Instrumentation Team, Faculty of Sciences, Mohammed V University, Rabat, Morocco

    Mahyoub Amer & Bousselham Kabouchi

  2. Botany, Mycology and Environment Laboratory, Faculty of Sciences, Mohammed V University, Rabat, Morocco

    Mohamed Rahouti

  3. Physics and Mechanics of Wood Laboratory, Centre de Recherche Forestière, Rabat, Morocco

    Abderrahim Famiri & Abdelwahed Fidah

Authors
  1. Mahyoub Amer
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  2. Bousselham Kabouchi
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  3. Mohamed Rahouti
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  4. Abderrahim Famiri
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  5. Abdelwahed Fidah
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Correspondence to Mahyoub Amer.

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Amer, M., Kabouchi, B., Rahouti, M. et al. Determination of growth stresses indicator, moisture profiles and basic density of clonal eucalyptus wood. J Indian Acad Wood Sci 14, 91–98 (2017). https://doi.org/10.1007/s13196-017-0192-z

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  • DOI: https://doi.org/10.1007/s13196-017-0192-z

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