Ten-year effects from row thinnings in loblolly pine plantations of eastern Maryland

Silas Little; John J. Mohr; Paul V. Mook

Treesearch

Ten-year effects from row thinnings in loblolly pine plantations of eastern Maryland

Informally Refereed

Authors:

Silas Little, John J. Mohr, Paul V. Mook

Year:

1967

Type:

Research Note

Station:

Northern Research Station

Source:

Research Note NE-77. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 8p.

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Abstract

Four degrees of row thinning were tested in 17-year-old loblolly pine plantations of eastern Maryland. In the following 10 years diameter and basal-area growth of tagged trees increased in relation to intensity of thinning. The heavier thinnings also had the most effect in increasing live-crown lengths and ratios and in favoring crown-class position. Volume growth was high in unthinned checks, and no thinning is recommended for pulpwood rotations. Infections by Fomes annosus were common after thinning, especially on stumps, but had no appreciable effect on growth or mortality of residual stands.

Citation

Little, Silas; Mohr, John J.; Mook, Paul V. 1967. Ten-year effects from row thinnings in loblolly pine plantations of eastern Maryland. Research Note NE-77. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 8p.