Multiple-Spur Climbers for High Pruning

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Pruning above the reach of pole saws and ladders is desirable in young Douglas-fir, but climbing with the conventional single-spur climbing iron does considerable damage. To minimize this damage the authors invented a climbing iron with several short points set on a curve to fit the tree; this they are parenting for free use in the United States.

Document Type: Journal Article

Affiliations: Formerly junior forester, Pacific Northwest Forest and Range Experiment Station, now in Purchasing Department, Southern Pacific Company

Publication date: May 1, 1949

More about this publication?
  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.
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