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Effects of Early Release on Natural Versus Container Loblolly Pines 12 Years After Field Establishment

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Genetically improved, container loblolly pine (Pinus taeda L.) seedlings were compared to naturally established loblolly seedlings on a cutover pine site. Crop pines on 6 of 12 plots were released from woody and herbaceous competition within a 2 ft radius of each stem. On release plots, woody competition was controlled by hand-cutting for 5 consecutive yr and herbaceous competition was controlled with herbicides for 4 consecutive yr after pine establishment. Competition control increased 12 yr survival by 68 percentage points for natural pines and by 47 percentage points for planted pines. Twelve years after field establishment, mean-tree volume of planted pines was no different than that of naturally established pines. Nevertheless, volume gains of 150% to 200% were achieved within regeneration techniques as a result of release. South. J. Appl. For. 26(4):173–180.
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Keywords: Container pines; Pinus taeda L.; environmental management; forest; forest management; forest resources; forestry; forestry research; forestry science; herbaceous competition; natural regeneration; natural resource management; natural resources; woody competition

Document Type: Miscellaneous

Affiliations: Southern Research Station, USDA Forest Service, 2500 Shreveport Highway, Pineville, LA, 71360, [email protected]

Publication date: 2002-11-01

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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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