Index Catalog // ScholarsArchive@OSU

Start Over

Filtering by: Committee Member Hansen, Everett Academic Affiliation Forest Science

The influence of induced host moisture stress on the growth and development of western spruce budworm and Armillaria ostoyae on grand fir seedlings

Creator:

Parks, Catherine G.

Abstract:

This greenhouse study evaluates the influence of separately and simultaneously imposed water stress, western spruce budworm (Choristorneura occidentalis Freeman) defoliation, and inoculation with the root pathogen, Armillaria ostoyae (Romagn.) Herink, on the growth and biochemical features of Abies .grandis (Dougl.) Lindi. Seedling biomass, plant moisture status, bud phenology, and allocation...

Resource Type:

Dissertation
Toxicity of methyl bromide to fungi inhabiting Dahurian larch wood

Creator:

Rhatigan, Ronald G.

Abstract:

Concerns over the possibility of exotic pest introductions from eastern Russia to the West Coast of the United States due to proposed log imports raises the question of the effectiveness of possible mitigation measures. Toxicity of methyl bromide to representative pathogenic fungi was tested by exposing Armillaria ostoyae, Heterobasidion annosum,...

Resource Type:

Masters Thesis
Effect of site and silvicultural treatment on insect pests and diseases of young ponderosa pine

Creator:

Norlander, Daniel W. D.

Abstract:

Ponderosa pine is an important species both commercially and ecologically in western North America. This study considers the incidence of insect and disease pests on a series of replicated ponderosa pine research plantations in northern California. The studies, on an environmental gradient, contain a series of silvicultural treatments including vegetation...

Resource Type:

Masters Thesis

Full Text:

a lot of thanks. Everett Hansen for his great forest pathology classes and for allowing me to do