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Effect of Tree Spacing on Weight Yields for Red Pine and Jack Pine

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Maximum weight yields were primarily a function of usable volume for 15-year-old stands of red pine (Pinus resinosa Ait.) and jack pine (Pinus banksiana Lamb.). Data were gathered on plantation spacings of 2 by 2, 4 by 4, 6 by 6, and 8 by 8 feet in Waushara County, Wis. Specific gravity showed no definite relationship to stand density for either species. In red pine the "optimum" yield and, consequently, the apparent best spacing for this site changed from 4 by 4 to 6 by 6 feet because of economic factors such as seedling, planting, and maintenance costs. The jack pine "optimum" for this site was also the 6- by 6-foot spacing.

Document Type: Journal Article

Affiliations: Forest Product Technologist, Forest Products Laboratory, Forest Service U. S. Dept. of Agric., Madison, Wisc.

Publication date: 1967-09-01

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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.

    2015 Impact Factor: 1.476
    Ranking: 22 of 66 in forestry

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