Two-stage sulfite pulping conditions were determined which
produced a high-yield high-hemicellulose pulp from red alder (Alnus
rubra Bong.). Those cooks with a bisulfite first-stage and an alkaline
second-stage produced pulps with the highest hemicellulose
content and the highest strength properties.
The major hemicellulose in red alder is 0-acetyl-(4-0-
methylglucurono)xylan. Removal...
The juvenile development of Douglas-fir, red alder and snowbrush
associations was investigated in western Oregon. The relationship
between Douglas-fir and red alder was studied and compared
in the Coast, Willamette Valley and Cascade regions. Snowbrush-
Douglas-fir stands were sampled in the western Cascades. Alder-
Douglas-fir relationships were studied on clearcuts...
Chemical and microbial analyses were made at four seasonal intervals on soil horizons under red alder, conifers, and mixed
alder-conifers at the Cascade Head Experimental Forest, established in 1937 by the U. S. Forest Service near Otis, Oregon.
Microbial analyses showed that although plate counts of molds and bacteria fluctuated...