Budworm in Coastal Alaska
Author: Hard, John S.
Source: Journal of Forestry, Volume 72, Number 1, 1 January 1974 , pp. 26-31(6)
Publisher: Society of American Foresters
Abstract:Periodic outbreaks of black-headed budworms have been reported in southeast Alaska and on Prince William Sound since 1917. The 1950's outbreak caused severe defoliation of mature hemlock and almost one-third of net volume was lost in some stands. The defoliation trend-ratio of acres defoliated in a given year to acres defoliated the year before-was directly related to regional Temperature Index. Since virgin stands have recovered from past outbreaks, widespread defoliation need not be viewed with alarm.
Document Type: Journal Article
Affiliations: Research Entomologist, Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture, Juneau, Alas
Publication date: 1974-01-01
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