Insect or fungus?

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  • #43151
    Tim Harrigan
    Participant

    Looks like I have a storage space problem.

    #69864
    Carl Russell
    Moderator

    Looks like a canker (Fungus)….. not sure about the forest type, but the fact it has scarred over makes me think of something like Armellaria, or Nectria. These cankers usually kill cambium in a parasitic manner, living on sugars there and killing the living tissue, thus the small scars. I’m sure there is some particular species that is prevalent on this species of tree.

    Carl

    #69865
    Scott G
    Participant

    Probably some type of pathogen. Good chance that they could be fungal cankers. Nectria, possible. Armillaria, at least out here, is more associated with root disease. ‘Mycelial fans’ under the bark on stumps and root flares are the easiest way to diagnose Amillaria. Can be really problematic in our spruce/fir forests on mesic sites.

    Not being from your area is tough. I would contact your pathologist/extension agent from your local State Forest Service/DNR. That is why they are there and more often than not it is a free service for you.

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