Release Accelerates Height Growth of Yellow-Poplar Seedlings
Five-year results of a yellow-poplar (Liriodendron tulipif era L.) seedling release study in southern Indiana indicate that yellow-poplar seedlings grow much faster if free of overhead cover. On an area cut to 40 square feet of residual basal area per acre, three degrees of release were studied: (a) high release--all trees larger than 6 inches d.b.h. were cut, (b) complete release--all woody vegetation over 5 feet tall was cut, and (c) no release. Five years later the released trees were three times as tall as those not released.
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Document Type: Journal Article
Affiliations: Research Forester, Central States Forest Expt. Sta., Forest Service, U.S. Dept. Agric., Field Office at Bedford, Ind.
Publication date: 01 February 1964