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Crown release increases growth of crop treesAuthor(s): Neil I. Lamson; H. Clay Smith; Arlyn W. Perkey; Samuel M. Brock; Samuel M. Brock
Source: Res. Pap. NE-635. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 8 p.
Publication Series: Research Paper (RP)
Station: Northeastern Research Station
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DescriptionTwo Appalachian hardwood stands in north-central West Virginia were thinned. The principal species were red oak, yellow-poplar, and chestnut oak. For both stands the site index for northern red oak averaged 75 feet. An areawide thinning using "basal-area control" was applied to a 54-yearold stand while specific crop trees were selected and released in a 12-yearold stand. Individual-tree &year growth of codominant trees and crop trees were related to number of sides of the crown that was free-to-grow. Codominant trees and crop trees grew about 25 percent more in d.b.h. than similar trees released on one or two sides of the crown. For best diameter-growth response, a tree should be released on at least three and preferably four sides of the crown.
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CitationLamson, Neil I.; Smith, H. Clay; Perkey, Arlyn W.; Brock, Samuel M. 1990. Crown release increases growth of crop trees. Res. Pap. NE-635. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 8 p.
Keywordsthinnings, crop trees, Appalachian hardwood, diameter growth
- Crop tree release improves competitiveness of northern red oak growing in association with black cherry
- Effect of crown growing space on the development of young hardwood crop trees
- Response to Crop-Tree Release: Sugar Maple, Red Oak, Black Cherry, and Yellow-Poplar Saplings in a 9-Year-Old Stand
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