Dwarf Mistletoe Pruning May Induce Douglas-Fir Beetle Attacks

Authors: Hadfield, James S.; Flanagan, Paul T.

Source: Western Journal of Applied Forestry, Volume 15, Number 1, 1 January 2000 , pp. 34-36(3)

Publisher: Society of American Foresters

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Abstract:

Fresh attacks of Douglas-firs (Pseudotsuga menziesii) by Douglas-fir beetles (Dendroctonus pseudotsugae) were found in a campground that had trees pruned to remove Douglas-fir dwarf mistletoe (Arceuthobium douglasii) infections. All Douglas-firs with a diameter at breast height (dbh) of at least 12.7 cm were examined. Beetle attacks were found on 41% of the pruned trees and 5% of the unpruned trees. Among pruned trees, both the average number of branches pruned and the average dbh were greater in trees attacked by Douglas-fir beetles than in unattacked trees. West. J. Appl. For. 15(1):34-36.

Document Type: Journal article

Affiliations: 1: USDA Forest Service, Wenatchee National Forest, 215 Melody Lane, Wenatchee, WA 98801

Publication date: 2000-01-01

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