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Home → Publications → Seed and Seedling Diseases in the Western US → Fungi Colonizing Douglas-fir Seed at the Champion Timberlands Nursery, Plains, Montana

Fungi Colonizing Douglas-fir Seed at the Champion Timberlands Nursery, Plains, Montana

Seedborne pathogens may cause important losses to conifer seedlings in nurseries. particularly if infected seeds are sown in containers or recently fumigated seedbeds. Several fungi are capable of colonizing conifer seed and attacking emerging germlings. Probably the most well known and damaging seedborne pathogens are those in the genus Fusarium (James 1983: Sutherland and Van Eerden 1980). These fungi may either be saprophytic or parasitic on seed or young seedlings. Growers at the Champion Timberlands Nursery. Plains. Montana. were concerned about relative rates of Fusarium contamination on Douglas-fir (PseudQtsuga menziesii (Mirb.) Franco) seed because of recurring problems with early seedling losses. Therefore. tests were conducted to provide information on contamination rates.


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Author(s): USDA Forest Service