Inoculation trials were set up in fumigated nursery beds for red alder (Alnus rubra Bong.) seedling production. Frankia inoculum was applied in eight treatments: control, nodule suspension, and three levels of cell suspension (strain ArI5) applied with and without a peat carrier. Seedlings were evaluated at midseason and lifting. The...
The objectives of this research were to isolate and
determine the molecular structures of certain polyphenols
in Douglas-fir and red alder barks. The compounds of
interest in Douglas-fir were the lignans which are
eventually incorporated into the outer bark phlobaphenes.
Phlobaphenes are the red colored, alcohol soluble, water
insoluble phenolic...
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...
This paper was published in: Deal, R.L. and C.A. Harrington, eds. 2006. Red alder—a state of knowledge. General Technical Report PNW-GTR-669. Portland, OR: U.S. Department of Agriculture, Pacific Northwest Research Station. 150 p.
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...
This study was designed to help elucidate what differences, if any, exist within the species Alnus rubra Bong., grown naturally at various elevations and locations throughout the Pacific Northwest and coastal Alaska. Increasing importance of the species, including both economic and silviculture values, prompted the investigation into the early growth...
Red alder (Alnus rubra Bong.) seedlings were grown at three initial spacings (8 x 8 cm, 4 x 4 cm, and 2 x 2 cm) and on two soil types
(forest soil and river loam) under greenhouse and lath house conditions for 525 growing days. There were seven harvest dates,...
Red alder (Alnus rubra Bong.) is recognized as an important source of nitrogen to
ecosystems that it inhabits. I examined N dynamics within alder trees, alder leaf litter, and the soil beneath alder leaf litter. ¹⁵Nitrogen, a stable isotope of N, was used as a tracer to follow the movement...
