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Title: Crop-tree release increases growth of 12-year-old yellow-poplar and black cherry
Author: Lamson, Neil I.; Smith, H. Clay.; Smith, H. Clay.
Source: Res. Pap. NE-622. Broomall, PA: US. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 7 p.
Description: Precommercial thinning was done in a 12-year-old Appalachian hardwood sapling stand in West Virginia. Two crop-tree release techniques were used--crown touching and crown touching plus 5 feet. Results indicated that both treatments significantly increased 5-year d.b.h. growth for released yellow-poplar and black cherry crop trees. Although there was a major increase in d.b.h. growth, caution is suggested when using the crown-touching plus 5 feet treatment as butt-log quality response was not conclusive. Releasing crop trees with the crown-touching approach seems appropriate in sapling stands when applied to desirable stems on better sites
Keywords: Appalachian hardwoods, saplings, crown touching, yellow-poplar, black cherry
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Lamson, Neil I.; Smith, H. Clay. 1989. Crop-tree release increases growth of 12-year-old yellow-poplar and black cherry. Res. Pap. NE-622. Broomall, PA: US. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 7 p.
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