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    Author(s): Jimmie L. Yeiser; Andrew W. Ezell
    Date: 2010
    Source: In: Stanturf, John A., ed. 2010. Proceedings of the 14th biennial southern silvicultural research conference. Gen. Tech. Rep. SRS–121. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. 131-138.
    Publication Series: General Technical Report (GTR)
    Station: Southern Research Station
    PDF: View PDF  (82.14 KB)

    Description

    Results from four loblolly pine (Pinus taeda L.) sites, one in each of MS and TX in 2001 and again in 2002, are presented. Twelve herbicide treatments and an untreated check were tested. Herbicide treatments were applied early (mid-March), late (mid-May), both timings, or not at all to achieve, early- late-, full-season, or no weed control. When averaged across all four sites and compared to the early treatment, bare ground was less from April through July and April through November on late treated and untreated plots, respectively. Full-season weed control provided numerically more bare ground than other treatments. When averaged across sites and compared to the early treatment, survival, total heights at ages one and two, and ground line diameters at age one were less on other treatments. Results are biologically important to managers. Many of the herbicide treatments tested can be applied early or late for the same cost but achieve excellent herbaceous weed control at different portions of the growing season. Early weed control consistently provided numerically more seedling performance than other treatments.

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    Citation

    Yeiser, Jimmie L.; Ezell, Andrew W. 2010. Split-season herbaceous weed control for full-season seedling performance. In: Stanturf, John A., ed. 2010. Proceedings of the 14th biennial southern silvicultural research conference. Gen. Tech. Rep. SRS–121. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. 131-138.

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