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Growth of 20-Year-Old Virginia Pine Planted at Three Spacings in Tennessee

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Average height of dominant and codominant Virginia pines (Pinus virginiana Mill). on a Mid-Cumberland Plateau site was 46 feet at plantation age 20, equivalent to a site index (base age 50) of 75. Trees planted at a spacing of 8 x 8 feet had a merchantable yield (outside bark to a 4.0 inch top for all trees with a dbh of 4.6 inches and larger) of 1,987 ft³ per acre with a basal area of 114 ftsup2; per acre. Comparative statistics on the other spacings tested were: 6 x 6 feet--2,067 ftsup3; and 123 ftsup2; and 4 x 4 feet--2,155 ftsup3; and 141 ftsup2;. Survival on the plots was: 4 x 4 feet--38%; 6 x 6 feet--58%; and 8 x 8 feet--75%. Height to base of live crown averaged 25 feet, and dead branches remained nearly to the ground on most trees at all spacings.

Document Type: Journal Article

Affiliations: Principal soil scientist, Silviculture Laboratory, maintained at Sewanee, Tennessee 37375 by the Southern Forest Experiment Station, USDA Forest Service, in cooperation with the University of the South

Publication date: February 1, 1985

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  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Southern Journal of Applied Forestry covers an area from Virginia and Kentucky south to as far west as Oklahoma and east Texas.
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