Phomopsis canker of douglas-fir
Branch, Annual shoot
Damage, symptoms and biology
Sporadic outbreaks of this disease occur in plantations and nurseries. Most damage is minor, particularly on older trees. Severe top-kill and girdling of younger trees can result in poor growth form or mortality.
This disease is known as Phomopsis canker because the asexual stage is more common, and was described prior to the discovery of the sexual stage (Diaporthe).
Canadian Forest Service Publications
Information on host(s)
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