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Notes: Effect of Intensive Cleaning on Natural Pruning of Cove Hardwoods in the Southern Appalachians

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An 11-year-old cove-hardwood sapling stand in the southern Appalachian Mountains was intensively cleaned in the winter of 1959-60. At age 25, the effect of intensive cleaning on natural pruning of butt logs was not significant for total number of defects for all tree species combined. No strong relationship existed between total defects and site index, number of trees, and basal area. Results did vary by tree species and kind of defect. Red oaks (Quercus spp.) had significantly more knots in uncleaned compartments because of slower diameter growth. White oaks (Quercus spp.) and red maple (Acer rubrum L.) had more large live limbs in cleaned compartments in response to release. Yellow-poplar (Liriodendron tulipifera L.) defects were not correlated to treatment, nor were any of the other kinds of defects on the oaks and red maple. For all species, the southeast butt-log face had more total defects than the northwest face, but differences were small and would have little effect on growing-stock grade. Red maple and yellow-poplar showed best natural pruning; red oaks were intermediate because of prevalence of dead limbs; white oaks were mostly poorly pruned since they had many live limbs in addition to other defects. Forest Sci. 29:27-32.
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Keywords: Acer rubrum; Liriodendron tulipifera; Quercus; butt-log defects; defect distribution

Document Type: Miscellaneous

Affiliations: Silviculturist, Southeastern Forest Experiment Station, Asheville, North Carolina 28804

Publication date: 1983-03-01

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2016 Impact Factor: 1.782 (Rank 17/64 in forestry)

    Average time from submission to first decision: 62.5 days*
    June 1, 2016 to Feb. 28, 2017

    Also published by SAF:
    Journal of Forestry
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