Pruning Pin Oak: Results and Costs

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Trees 6 to 10 inches d.b.h. in well-stocked, pure, even-aged stands of pin oak (Quercus palustris Muenchh.) were pruned to 17 feet and four years later it was found that season of pruning (March, June, October) had no effect on number of new branches or on rate of healing. More than 90 percent of the pruning wounds were completely healed, and no rot was evident. On the average, 36 bole branches were pruned off and four years later there was an average of seven new bole sprouts present; about a third of them were already dead. The number of new bole branches had a positive relationship to the original number on the tree. Trees exposed on the south-southwest side, as compared to unexposed trees, had more and much longer sprouts on the south-southwest side. Both exposed and unexposed trees had more new sprouts on the south-southwest side than on the opposite side. It is estimated that pruning may increase the probable future "Quality Index" 20 to 30 years hence from 59 to 90. Pruning time per tree ranged from 0.6 to 5.6 man-minutes for trees with 10 and 90 bole branches, respectively. Based on present dollar values, the probable net gain 30 years hence was estimated to be $3 for trees with 30 original bole branches but less for trees with fewer and more branches.

Document Type: Journal Article

Affiliations: Research Forester, Central States Forest Expt. Sta., Forest Service, U. S. Dept. Agric., at Field Office Maintained in Cooperation with Southern Illinois University, Carbondale

Publication date: January 1, 1964

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  • 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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