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Probability of Damage to Sitka Spruce by the Sitka Spruce Weevil, Pissodes strobl



Probability of Damage to Sitka Spruce by the Sitka Spruce Weevil, Pissodes strobl







A nine-year record of attacks to Sitka spruce, Picea sitchensis (Bong.) Carr., by the Sitka spruce weevil (=white pine weevil), Pissodes strobi (Peck), was analyzed to determine the probability of attack on a tree based on the length of its terrninal leader. Equations describing the relationship were developed. Tall trees with long leaders had higher rates of attack than short trees with short leaders.

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Accession: 037134586

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Related references

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