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Notes: A Micro-borer for Extracting Increment Cores From Small Stems of Woody Plants

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A micro-borer was developed to extract increment cores from woody stems too small to accept conventional borers. The carbon steel bit, 3.4 mm in diameter and 40 mm in length, is inserted in a rechargeable, portable drill for use in the field. An extractor is forced through the bit with the aid of a C-clamp to remove the 2.4 mm diameter core. The small diameter cores transmit light well and annual increments are easily discernable. The micro-borer, when coupled with the use of conventional borers and observations of bud scale scars, permits age determinations for entire populations ranging from juveniles to adults. Forest Sci. 29:329-331.

Keywords: Age determinations; increment borer; population ecology

Document Type: Miscellaneous

Affiliations: Retired Instrument Maker, Lab Support Services, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061

Publication date: June 1, 1983

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

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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