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Home → Publications → Seed and Seedling Diseases in the Western US → Evaluation of Fungal Population on Ponderosa Pine Seed

Evaluation of Fungal Population on Ponderosa Pine Seed

Abundance and identity of fungi colonizing ponderosa pine seed were determined on eight selected seedlots collected for the Champion Timberlands Nursery, Plains, MT. Thirty groups of organisms were found within the seedlots; surface sterilization with CloroX® did not remove all fungi from seed. Although potential of isolated organisms to cause diseases of seed and seedlings is unknown, several contaminating fungi including Fusarium, Pythium, Botrytis, and Verticillium are possible pathogens. Seed treatment to reduce or eliminate fungal contamination is necessary to produce healthy seedlings at the nursery.


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Author(s): USDA Forest Service