A budworm vigor resistance classification for spruce and balsam fir
Views: 931
Downloads: 2
[mrp_rating_result no_rating_results_text="No ratings yet" before_count="(" after_count=" ratings)"]
- Westveld, Marinus
Northeastern Forest Experiment Station, Forest Service, USDA.
A spruce budworm epidemic again threatens the spruce-fir pulpwood forests of the Northeast. One defense against this insect is through silviculture. The author suggests selective-cutting methods to make spruce-fir stands more resistant, and offers a tree-classification system as a guide for selecting trees to cut and retain.
You must be logged in to post a comment.