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Filtering by: Creator Stambaugh, Sharmon M. Degree Field Botany

Comparison of Phellinus weirdi root rot damage in a 60-year-old Douglas-fir (Pseudotsuga menziesii) stand with the damage in the preceding old-growth stand

Creator:

Tkacz, Borys M.

Abstract:

Laminated root rot of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) caused by the fungus Phellinus weirii (Murr.)Gilbertson was studied in two successive stands in the Oregon Coast Range. Damage due to the disease in a 60-year-old second-growth stand was compared with incidence in the preceding 300-year-old stand on the same site....

Resource Type:

Masters Thesis

Full Text:

for Privacy Everett M. Hansen Laminated root rot of Douglas-fir (Pseudotsuga menziesii (Mirb
Infection of stressed ponderosa pines by Armillariella mellea from indigenous and artificial inoculum sources

Creator:

Fuller, Lloyd Randolph

Abstract:

Armillariella mellea (Vahl. ex Fr. ) Karst. was grown aseptically in hazel stems (Corylus cornuta var. californica) which were used in the forest to infect 290 ponderosa pines (Pinus ponderosa Laws.) which had been "stressed" in five different manners plus two control groups. All trees were inoculated twice giving a...

Resource Type:

Dissertation

Full Text:

cm of the soil surface. In 30 cm 2 pits at the intersections of a 10 m by 10 m grid Redfern (1973