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Publication Information

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Title: Specific Gravity Variation in a Lower Mississippi Valley Cottonwood Population

Author: Farmer, R. E. Jr.; Wilcox, J. R.;

Date: 1966

Source: Tappi 49(5):210-211

Publication Series: Scientific Journal (JRNL)

Description: Specific gravity varied from 0,32 to 0.46, averaging 0.38. Most of the variation was associated with individual trees; samples within locations accounted for a smaller, but statistically significant, portion of the variation. Variation between locatians was not significant. It was concluded that individual high-density trees' should be sought throughout the population. Wood near the cambium was more dense than that near the pith or middle of stems; this position effect was influenced by location and samples within locations. Relatively low correlations between density of juvenile and more recently formed wood indicate that selection for specific gravity at 'an early age may not be efficient. A slight negative relationship was observed between specific gravity and mean annual diameter increment.

Keywords: Populus deltoides, Populus, Hardwoods, Density, Growth Tissues (plant), Plant anatomy, Wood structure

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.



Farmer, R. E., Jr.; Wilcox, J. R. 1966. Specific Gravity Variation in a Lower Mississippi Valley Cottonwood Population. Tappi 49(5):210-211.


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