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    Author(s): D.C. McClurkin
    Date: 1975
    Source: Res. Note SO-209. New Orleans, LA: U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station. 4 p.
    Publication Series: Research Note (RN)
    Station: Southern Forest Experiment Station
    PDF: View PDF  (81 KB)

    Description

    At age 20, survival, height growth, diameter growth and volume were poorer for trees with initial planting spacings of 4 by 4 feet than for those planted at 6 by 6 or 8 by 8 feet. The strong correlation (r2 = 0.82) found between site index and spacing suggests that for these plantations, height and ultimately site index classification were correlated with stocking density rather than with the actual quality of the site. Therefore, for trees planted at close spacings, the use of the height of dominant trees as the index of site quality may underestimate potential site productivity.

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    McClurkin, D.C. 1975. Influence of Spacing on Growth of Loblolly Pines Planted on Eroded Sites. Res. Note SO-209. New Orleans, LA: U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station. 4 p.

    Keywords

    Pinus taeda L., site index, height growth, diameter growth, yield

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