Experimentation with girdling to enhance growth of spruce and balsam fir in harvested hardwood sites, suggesting effective forest management.
Girdling gives great promise as a method of reclaiming natural spruce and fir sites from the dominance of the overstory of hardwood left in early logging operations. The authors discuss girdling as practised by several organizations, and give the results of their experiments, as well as data on the growth of spruce and balsam fir following the girdling of the competing hardwoods.
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Plice et al. (1931) studied this question.
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