(ABC 8 in Portland) and the highlighted research on budworm outbreaks from a in which the University of º£½ÇÉçÇø Cooperative Forestry Research Unit is a partner. The research states that every 30 to 60 years, there is an outbreak and severe defoliation. º£½ÇÉçÇø is expected to have outbreak populations of the insect within three years, and has 300,000 acres of fir trees at risk.
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