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Filtering by: [Harrisburg, Pa. : s.n., 1927] Academic Affiliation Botany and Plant Pathology Degree Name Doctor of Philosophy (Ph.D.) Language English [eng] Rights Statement Copyright Not Evaluated

1. Distribution and prediction of Swiss needle cast of Douglas-fir in coastal Oregon

Creator:: Rosso, Pablo H.
Abstract:: This study was directed to improve our understanding of the ecology of Swiss needle cast (SNC) of Douglas-fir, a disease that produces extensive damage to forests and plantation in the coastal region of Oregon and Washington. A disease prediction model for the coastal area of Oregon was built by establishing...
Resource Type:: Dissertation
Full Text:: )(rnoriths: J,A,M,J,J & N) (Pa) 2.5 arc-minute ( 4x4 km) raster Degree days, base 0°C (months: JA,M,J,J & N

2. Fescue taxonomy in the Pacific coast states

Creator:: Wilson, Barbara L.
Abstract:: Accurate taxonomy is essential to preservation and management of native grasses. Four problems in fescue taxonomy were investigated: the identity of the native fescue that dominates western Oregon and Washington prairies, the relationship of native Festuca roemeri to closely related grasses, the status of F. howellii and F. washingtonica, and...
Resource Type:: Dissertation
Full Text:: Piper (1906) citing Oregon World's Fair Commission s.n., 1892, as the type; not as described by Vasey

3. Mycorrhizal fungi and their relationship to plant succession in subalpine habitats

Creator:: Cazares, Efren
Resource Type:: Dissertation
Full Text:: 1.4-1.6). EM have been reported on this species (McDougall & Jacobs, 1927; Trappe 1961, 1964). Other

4. Heat as a factor in germination of seeds of Ceanothus velutinus var. laevigatus T. & G.

Creator:: Gratkowski, H.
Resource Type:: Dissertation

ScholarsArchive@OSU

1. Distribution and prediction of Swiss needle cast of Douglas-fir in coastal Oregon

2. Fescue taxonomy in the Pacific coast states

3. Mycorrhizal fungi and their relationship to plant succession in subalpine habitats

4. Heat as a factor in germination of seeds of Ceanothus velutinus var. laevigatus T. & G.

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1. Distribution and prediction of Swiss needle cast of Douglas-fir in coastal Oregon

2. Fescue taxonomy in the Pacific coast states

3. Mycorrhizal fungi and their relationship to plant succession in subalpine habitats

4. Heat as a factor in germination of seeds of Ceanothus velutinus var. laevigatus T. & G.

Limit your search