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Filtering by: Subject Botany -- Northwestern States Subject Roots (Botany) -- Diseases and pests -- Idaho

Root disease of containerized conifer seedlings, Western Forest Systems Nursery, Lewiston, Idaho

Creator:

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

Abstract:

Investigations of containerized western white pine, western larch, and Douglas-fir seedlings at the Western Forest Systems Nursery in Lewiston, Idaho, revealed that many seedlings were colonized with Fusarium oxysporum although they lacked severe disease symptoms. White pine seedlings were also infected with Pythium spp., probably as a result of sowing...

Resource Type:

Technical Report

Full Text:

. Marasas. 1983. Fusarium species: an illustrated manual for identification. The Pennsylvania State
Root diseases of western white pine transplants at the USDA Forest Service Nursery, Coeur d'Alene, Idaho

Creator:

James, Robert L., Gilligan, Carma J., and United States. Forest Service. Northern Region

Abstract:

Mortality of western white pine transplants used to assess resistance to blister rust at the USDA Forest Service Nursery in Coeur d'Alene, Idaho was likely due to extensive root infection by Pythiva app. Severity of foliar symptom production was significantly correlated with extent of root system colonization by these fungi....

Resource Type:

Technical Report

Full Text:

identification. Pennsylvania State University Press, University Park, 193 p. Vaartaja, 0. 1967. Reinfestation of