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Filtering by: Subject Douglas fir -- Fertilizers Creator James, Robert L. Subject Douglas fir -- Diseases and pests

Epidemiology of Fusarium on containerized Douglas-fir seedlings. I, Seed and seedling infection, symptom production, and disease progression

Creator:

James, Robert L., United States. Forest Service. Northern Region, and United States. Forest Pest Management

Abstract:

Investigations were conducted to understand the epidemiology of Fusarium on containerized Douglas-fir seedlings. Types and importance of Fusarium inoculum sources, relationships between seedling infection and symptom production, amounts and types of diseases that occurred throughout typical growth cycles, and the importance of secondary pathogen spread were investigated. Levels of Fusarium...

Resource Type:

Technical Report

Full Text:

• Report 87-13 3450 December 1987 EPIDEMIOLOGY OF FUSARIUM ON CONTAINERIZED DOUGLAS-FIR SEEDLINGS
Pathogenicity of Alternaria alternata on young Douglas-fir and Engelmann spruce germlings

Creator:

James, Robert L., Woo, John You, and United States. Forest Service. Northern Region

Resource Type:

Technical Report

Full Text:

-FIR AND ENGELMANN SPRUCE GERMLINGS e by R. L. James 1/ Plant Pathologist • • and INTRODUCTION
Pathogenicity of Fusarium from forest seedling nurseries on Douglas-fir and ponderosa pine seedlings

Creator:

James, Robert L. and United States. Forest Service. Northern Region. State & Private Forestry

Abstract:

Eighteen isolates of Fusarium comprising four species (F. oxysporum, E. avenaceum, E. acuminatum, and F. sambucinum) isolated from diseased conifer seedlings from nurseries were tested for pathogenicity on Douglas-fir germlings. Three of the most pathogenic F. oxysporum isolates on Douglas-fir germlings were also tested on ponderosa pine germlings and older...

Resource Type:

Technical Report

Full Text:

ON DOUGLAS-FIR AND PONDEROSA PINE SEEDLINGS by R. L. James, Plant Pathologist, Cooperative Forestry

ScholarsArchive@OSU

Epidemiology of Fusarium on containerized Douglas-fir seedlings. I, Seed and seedling infection, symptom production, and disease progression

Pathogenicity of Alternaria alternata on young Douglas-fir and Engelmann spruce germlings

Pathogenicity of Fusarium from forest seedling nurseries on Douglas-fir and ponderosa pine seedlings

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