Image: Joseph O’Brien, USDA Forest Service, Bugwood.org |
- Eastern filbert or hazelnut blight (caused by Anisogramma anomala) is a fungal disease that causes potentially fatal cankers on the trunk and branches of hazelnut trees
- In the United States, entire orchards have been lost to this disease
- Cankers can expand at a rate of 30cm per year, causing canopy and yield loss
- If mature trees become infected, death may result in 5-15 years: if trees are younger when they become infected, they may be killed within 4-7 years
- New infections are usually as a result of infected nursery stock. Symptoms may not be seen for up to two years
- As the canopy dies back, new shoots and suckers may emerge from the base of the tree base, which also become infected and die
- Cool wet weather and rain splash is needed for dispersal
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High priority pest of: Hazelnuts
Scientific name: Anisogramma anomala
EPPRD Category: 3
Life Form: Fungus
Pest Documents
FS: fact sheet
CP: contingency plan
DP: diagnostic protocol
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