Pamphlets On Forest Protection volume 6

Cover Pamphlets On Forest Protection volume 6
Pamphlets On Forest Protection volume 6
George C George Cary Comstock
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Mature beetles are found at all seasons.
2. Wherever broods are mature the beetles will not die from exposure.
3. The slash and bark constitutes a fire menace. Leav- ing this material on the ground is contrary to Forest Service protective policy.
4. The unburned linbs breed Ips confusus, killing tops of mature trees and young growth, besides a host of secondary insects which kill limbs and twigs of otherwise healthy trees.
Therefore the same method will be followed in sugar pine as in yellow pi
...ne infestation.
Jeffrey Pine:- This species of tree must be treated the same as sugar pine as the habits of the attacking species are the same as the mountain pine beetle (Dendroctomis monticolae).
Lodgepole Pine:- On account of the extremely thin bark and the comparatively small size of this tree, all trees which -48- san be conveniently handled should be bucked into a pile and turned. Trunks should only be peeled where it is unavoid- ible, on account of the difficulty in peeling.
Other Species:- Cedars, firs and Douglas fir s/Kmld receive the same treatment as yellow pine, but infestations in these species are not being treated at present.


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