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Forest Science Database

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Abstract

In 1976, spruce budworm [Choristoneura fumiferana] infested plots in a stand in northern Wisconsin where aspen and paper birch [Populus, Betula papyrifera] had been thinned from above or below or clear felled in 1950 (36 yr old), thinned from below in 1953 or commercially or completely clear felled ...

Author(s)
Batzer, H. O.; Benzie, J. W.; Popp, M. P.
Citation
Northern Journal of Applied Forestry, 1987, 4, 2, pp 73-75
Abstract

During the 1956 summer, tree mortality as a result of girdling by black bears was observed for the first time in the Spruce/Fir stands of N. Maine. The bears show a definite preference for Balsam Fir in the large-pole size-class; reasons for this preference are not known. KEYWORDS: Abies balsamea...

Author(s)
Zeedyk, W. D.
Citation
Journal of Forestry, 1957, 55, 10, pp 731-2
Abstract

The White Spruce/Balsam Fir/Paper Birch type is one of the most important sources of pulpwood and, by its growth rate and value, presents one of the most favourable opportunities for profitable forest management in Michigan. The essential points in the management of this type are (1) to cut early,...

Author(s)
Day, M. W.
Citation
Quarterly Bulletin. Michigan State University Agricultural Experiment Station, 1945, 28, pp 59-65
Abstract

In spite of its common name, Cacoecia fumiferana favours Balsam Fir as a host species, and Spruce is only a second choice. The present bulletin discusses the amount of damage done by the insect, the effect of an outbreak on various host species, the course of an outbreak, effects of defoliation,...

Author(s)
Graham, S. A.; Orr, L. W.
Citation
Technical Bulletin. Minnesota Agricultural Experiment Station, 1940, No. 142, pp 27 pp.

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