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Dothistroma needle blight (Dothistroma septosporum) on Spruce (Picea sp.)


4 Images

Paul Bachi
University of Kentucky Research and Education Center

Infected needles show brown spots with dark border and/or dead tips with dark border between dead and healthy portion of the needle.


Paul Bachi
University of Kentucky Research and Education Center

Needles show brown spots with dark border.


Paul Bachi
University of Kentucky Research and Education Center

Close-up of dead needle tip with black, spore-producing bodies ("acervuli") breaking through needle surface.


Paul Bachi
University of Kentucky Research and Education Center

Spores of the anamorph fungus Dothistroma septosporum.