This investigation was undertaken to develop a procedure
by which the fatty acids could be separated from the
hydroxy fatty acids of bark waxes. The specific hexane-insoluble, benzene-soluble wax used in this research was obtained
from the bark of white fir, Abias concolor, (Lindl.
and Gord.).
The acids were removed...
This is the first detailed chromatographic examination of Pseudotsuga menzesii and three other Pseudotsuga species (P. macrocarpa, P. japonica, and P. wilsoniana). The whole bark of these four species was sequentially extracted with hexane, benzene, ethyl ether, ethyl alcohol and water. Paper and thin layer chromatographic techniques were coupled with...
Both public agencies and private industry are concerned with
how timber is appraised for sale. An important part of the
appraisal is estimating the lumber volume and value of standing
timber. A system which accurately estimates the volume and value of
young-growth true fir is needed.
This study uses existing...
First season container-grown noble fir (Abies procera) and Shasta red fir (Abies magnifica var. shastensis) seedlings were given six combinations of shade (0%, 30%, and 50% shade) and irrigation (moist and dry) treatments in the nursery beginning in late July, 1977. To evaluate frost hardiness
development, destructive freezing tests were...
