Skip to page content
USDA Forest Service
  
Treesearch

Research & Development Treesearch

 
Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Northern
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help
 

Science.gov - We Participate


USA.gov  Government Made Easy


Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

View PDF (4.0 MB)

Title: Variation of Specific Gravity in Plantation-Grown Trees of Bigleaf Mahogany

Author: Briscoe, C. B.; Harris, J. B.; Wyckoff, D.;

Date: 1963

Source: Carribean Forester 24(2):67-74

Publication Series: Scientific Journal (JRNL)

Description: As a prelude to tree improvement work in the genus Swietenia, a study was made of specific gravity variation within the bole of six plantation-grown trees of bigleaf mahogany. Variation was appreciable, from 0.36 to 0.65 , and several patterns were determined. Specific gravity of the tree increased with growth rate, as expressed in diameter at breast height, but not with relative length of radius at a given height in a particular tree. It increased outward from the pith; but it was high at the base dropped markedly to a minimum at eight feet, then increased to near the base of the crown. There was no clear correlation with direction, but in these trees the wood at heights of 22 and 29 feet is heavier along the west radius. Tree specific gravity can be estimated from specific gravity at the pith at 1-foot height, r = 0.618, or from core specific gravity and growth, as expressed by diameter breast high and merchantable height, r=0.987.

Keywords: mahogany

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.

XML: View XML

Citation:


Briscoe, C. B.; Harris, J. B.; Wyckoff, D. 1963. Variation of Specific Gravity in Plantation-Grown Trees of Bigleaf Mahogany. Carribean Forester 24(2):67-74.

 


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.