
Spruce Budworm Defoliation in Relation to Introgression in Red and Black Spruce
Goal(s)/Objective(s): Rating branch samples for severity of budworm damage to 1968 foliage, using 10 defoliation categories ranging from rating one for no defoliation to rating ten for complete defoliation.
Key Findings: Post-cutting regeneration techniques would favor the less shade-tolerant black spruce.
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