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Filtering by: Subject Douglas fir -- Diseases and pests -- Biological control Academic Affiliation Forest Engineering Resources and Management

The Effects of Seed Source and Planting Environment on Douglas-fir (Pseudotsuga menziesii) Foliage Diseases

Creator:

Wilhelmi, Nicholas

Abstract:

Douglas-fir (Pseudotsuga menziesii) is a commercially and ecologically important tree species native to western North America. The foliar pathogens Phaeocryptopus gaeumannii, the causal agent of Swiss Needle Cast, and Rhabdocline species, the causal agents of Rhabdocline needle cast, are two important pathogens specific to Douglas-fir. These pathogens are highly influenced...

Resource Type:

Masters Thesis

Full Text:

Douglas-fir has likely resulted in wide variation in the pathogens and disease pressure to which