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Variation in Some Wood Properties of Eastern White Pine

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Variation in growth rate and wood properties were studied from breast-height increment cores from 31 selected P. strobus L, trees growing in Morgan County, Tenn. The average amount of extractives was equal to 8.4 percent of the unextracted young wood (10-20 yrs. from the pith) and 7.2 percent of the older wood (20-30 yrs. from the pith). Older wood had longer tracheids and higher specific gravities than young wood. Variation among trees was significant at the 0.1 percent level for all characteristics except two: specific gravities of extracted and unextracted young wood. The correlation coefficients for radial growth and extracted specific gravities accounted for 11.5 percent of the variation in specific gravity of young wood; 9.5 percent for old wood. Relationships between radial growth and extractives, and tracheid length were weak, being significant only in young wood. Thus, growth differences did not account for a large proportion of the variation in these wood properties. Relationships such as those between specific gravity before and after extraction, between tracheid length at 20 and 30 years, and between extracted specific gravity of young and old wood, accounted for large proportions of the variations. Extractives accounted for only about 17 percent of the variation in young wood density, but 44 percent in the density of old wood. The relationship between specific gravity and tracheid length was very weak.
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Document Type: Journal Article

Affiliations: Associate Professor, Dept. of Forestry, The Univ. of Tenn., Knoxville

Publication date: 1965-12-01

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2016 Impact Factor: 1.782 (Rank 17/64 in forestry)

    Average time from submission to first decision: 62.5 days*
    June 1, 2016 to Feb. 28, 2017

    Also published by SAF:
    Journal of Forestry
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