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Daminozide and Ethephon Effects on Growth of Red Maple and White Pine on Cleared Sites

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Abstract:

The effects of foliar applications of daminozide [butanedioic acid mono (2,2-dimethylhydrazide)] and ethephon [(2-chloroethyl) phosphonic acid], alone and in combination, on the growth of planted white pine seedlings (Pinus strobus L.) and resprouts of red maple (Acer rubrum L.) were studied on clearcut areas in Virginia. Shoot growth of white pine seedlings was not significantly affected by any of the treatments. Ethephon at 1.6 kg/ha reduced red maple shoot growth by approximately 50 percent, and caused chlorosis and necrosis of treated leaves, defoliation, and dieback. Ethephon in combination with daminozide (1.6 + 1.6 kg/ha) inhibited red maple shoot growth by approximately 45 percent without causing severe leaf or stem injury and did not appear to reduce the estimated in vivo dry matter digestibility of red maple by deer. Forest Sci. 30:291-299.

Keywords: Acer rubrum; Pinus strobus; defoliation; dieback; digestibility

Document Type: Journal Article

Affiliations: Professor of Plant Physiology, Department of Plant Pathology and Physiology, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061

Publication date: 1984-06-01

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.

    2015 Impact Factor: 1.702
    Ranking: 16 of 66 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
    Other SAF Publications
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