Field Techniques for Assessing the Impact of the Spruce Budworm (Lepidoptera: torticidae) in Michigan’s Upper Peninsula
Date Published: 1979
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- Mog, Thomas P.
University of Michigan - Witter, J.A.
University of Michigan
The described field techniques are currently employed in balsam fir stands within the Hiawatha and Ottawa national forests to assess the impact of the spruce budworm, Choristoneura fumiferana (Clemnens), on balsam fir and spruce.
Note: Scan is imperfect, small part of left side cut off.
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