USDA Forest Service
 

Pacific Southwest Research Station

 

Pacific Southwest Research Station
800 Buchanan Street
Albany, CA 94710-0011

(510) 559-6300

United States Department of Agriculture Forest Service. USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.

Publications and Products

Order a printed copy
of this publication.

Research Paper

Title: Specific gravity variation in robusta eucalyptus grown in Hawaii

Author: Skolmen, Roger G.

Date: 1972

Source: Res. Paper PSW-RP-78. Berkeley, CA: Pacific Southwest Forest & Range Experiment Station, Forest Service, U.S. Department of Agriculture; 7 p

Station ID: RP-PSW-078

Description: The specific gravity (air-dry volume, ovendry weight) of Eucalyptus robusta wood was tested within and between trees from 10 stands. Mean specific gravity was 0.603, but the range in individual samples for 50 trees was 0.331 to 0.869, and was 0.357 to 0.755 within one cross section. A consistent increase was recorded in all trees from pith to cambium and from butt to top. Mean for brittleheart (brash wood near the pith) was 0.503, considerably lower than that for normal wood at 0.651. Manufacturing problems caused by density variation could be reduced by sorting before sawing and during grading.

Key Words: Eucalyptus robusta, wood density, specific gravity, brittle-heart, variation, Hawaii

View and Print this Publication (409 KB)

Citation

Skolmen, Roger G.  1972.  Specific gravity variation in robusta eucalyptus grown in Hawaii  Res. Paper PSW-RP-78. Berkeley, CA: Pacific Southwest Forest & Range Experiment Station, Forest Service, U.S. Department of Agriculture; 7 p.

Last Modified: Nov 18, 2013 12:45:45 PM