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Filtering by: Creator Baker, Walter Rawalt Resource Type Dissertation Subject Douglas fir

Influence of interplanted and pure stands of red alder (Alnus rubra Bong.) on microbial and chemical characteristics of a coastal forest soil in the Douglas-fir region

Creator:

Chen, Chi-sin

Abstract:

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...

Resource Type:

Dissertation

Full Text:

ACKNOWLEDGMENTS The writer expresses his deepest appreciation to Dr. Walter B. Bollen, professor of microbiology
The effects of mycorrhizal colonization and phosphorus fertilization on Douglas-fir seedling growth, morphology, and photosynthesis

Creator:

Black, C. H. (Charles H.)

Resource Type:

Dissertation

Full Text:

Marion, Dr. Jochen Kummerow, and Dr. Walter Oechel for encouragement and support during the final thesis
The growth of seedlings of some coniferous species in a controlled environment

Creator:

Lavender, Denis Peter, 1926-

Resource Type:

Dissertation