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Influence of Crown Reduction on Springwood and Summerwood Distribution in Longleaf Pine

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A study was made to determine the effect of reduction of crown size on tree growth, especially its effect on wood formation in longleaf pine (Pinus palustris Miller). Severe and continued reduction of the lower part of the crown resulted in greatly reduced ring width in the lower part of the trunk. Springwood was reduced more than summerwood at the lower levels in comparison with wood formation in unmodified control trees. Higher in the trees near the lower limit of the crown, proportions of springwood and summerwood differed much less. The effect on springwood reduction in parts of the lower trunks of pruned trees was persistent for several years in the trees studied.
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Document Type: Journal Article

Affiliations: Forest Products Technologist, Forest Products Laboratory, Forest Service, U. S. Department of Agriculture, Maintained in cooperation with the University of Wisconsin, Madison

Publication date: 1951-03-01

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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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