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Stem-quality changes on young, mixed upland hardwoods after crop-tree releaseAuthor(s): David L. Sonderman; David L. Sonderman
Source: RP-NE 597. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 7 p.
Publication Series: Research Paper (RP)
Station: Northeastern Research Station
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DescriptionRelative change of several types of stem defects was studied over an 8-year period to determine the effects of crop-tree thinning on the development of tree quality. Special interest was given to changes in relative quality associated with defect indicators of crop trees compared to trees in unthinned plots. The relative quality classes of the crop trees went from "poor" to "medium" for red maple and "poor" to "good" for aspen. The oaks stayed in the poor classification and yellow-poplar remained unchanged in the medium classification. Results showed a decrease in the number of epicormic branches on the crop trees, and an increase in the size of live limbs.
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CitationSonderman, David L. 1987. Stem-quality changes on young, mixed upland hardwoods after crop-tree release. RP-NE 597. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 7 p.
Keywordsstand density, thinning, stem quality
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