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Costs and Benefits of a Mature First-Generation Loblolly Pine Tree Improvement Program

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First-generation tree improvement programs with loblolly pine (Pinus taeda L.) are now reaching maturity. Yields from first-generation seed orchards in the North Carolina State University-Industry Cooperative Tree Improvement Program are now great enough to allow most members to meet all of their regeneration needs with improved stock. Progeny test measurement is a major activity of the cooperative, with the final first-generation progeny tests established in 1983. Final crop gains on 25-year rotations from one generation of loblolly pine tree improvement are estimated to be as high as 7 percent in height (site index), 12 percent in cubic foot volume, and 32 percent in harvest value. Tree improvement continues to be an attractive investment opportunity. Rates of return for investments in loblolly pine tree improvement depend on seed orchard yields, but appear to be on the order of 17 to 19 percent after taxes.
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Document Type: Journal Article

Affiliations: Former Graduate Research Assistant, N.C. State University-Industry Cooperative Tree Improvement Program, Department of Forestry, N.C. State University, Raleigh

Publication date: 1985-03-01

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  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.

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