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Survival rate of spruce bark beetles with machine debarking



Survival rate of spruce bark beetles with machine debarking



AFZ, Allgemeine Forst Zeitschrift 48(7): 359-360



Picea abies logs infested by bark beetles (Ips typographus and Pityogenes chalcographus) were barked with a mobile debarking machine, and the number and survival rate of the bark beetles in the bark was determined. Infestation density before barking was averaged 76 per kg of bark in the case of I. typographus, and 70 per kg in the case of P. chalcographus. The survival rates after mechanical debarking were 7% for I. typographus and 70% for P. chalcographus.

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Accession: 002973179

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