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    Author(s): Jennifer A. Franklin; Matthew Aldrovandi
    Date: 2018
    Source: In Kirschman, Julia E., comp. 2018. Proceedings of the 19th biennial southern silvicultural research conference. e-General Technical Report SRS- 234. Asheville, NC: U.S. Department of Agriculture Forest Service, Southern Research Station.
    Publication Series: Proceedings - Paper (PR-P)
    Station: Southern Research Station
    PDF: View PDF  (263.0 KB)

    Description

    Since 1930, approximately 2.5 million ha have been disturbed by surface mining in the
    United States. On many mine sites reclaimed since the Surface Mining Control and Reclamation Act of 1977 both
    compacted soils and aggressive nonnative plant communities are common, and sites may require remediation
    in order to establish forests (Burger and others 2013). Planted grasses and legumes can compete strongly with
    planted tree seedlings, and there is a need to identify herbaceous species that are compatible with reforestation
    (Franklin and others 2012). Browse damage to planted tree seedlings can be extensive in the Southeast and may
    also be influenced by the composition of herbaceous vegetation.

    An experiment was established to test for tree growth and establishment in four vegetation treatments on 8 ha
    of an old reclaimed mine site in northeastern Tennessee. Soil compaction was first relieved by subsoiling to a
    depth of 1 m. Bare-root 1-0 seedlings of 15 tree and shrub species were planted on a 2.4-m by 2.4-m spacing
    in late winter of 2015 (table 1). The herbaceous treatments were applied immediately following tree planting: 1)
    herbaceous control using an application of glyphosate herbicide in a 0.5-m radius around each planted tree in
    late spring, 2) seeding with a mixture of herbaceous annuals and perennials preferred by deer, 3) seeding with
    a mixture of herbaceous annuals and perennials that are not preferred by deer, and 4) untreated control. Pretreatment
    composition of vegetation was surveyed in August of 2014 and was dominated by nonnatives with
    a total herbaceous cover of 93 percent. The composition of herbaceous vegetation was monitored in May and
    August of 2015.

    Herbaceous cover was reduced to 66 percent across all treatments in May, and by August both seeded and
    control treatments had returned to initial levels (82–93 percent), while herbicide treatments still had significantly
    reduced cover (78 percent). Subsoiling did not reduce the frequency or dominance of lespedeza (Lespedeza
    cuneata), but did reduce the presence of tall fescue (Festuca arundinacea) from 52 percent of plots to 13 percent
    and its dominance from to 34 to 4 percent of plots. At the end of the first growing season, the percentage of tree
    and shrub seedlings with obvious signs of browse damage varied from 9–64 percent (table 1). Binary logistic
    regression was used to test the effect of species and treatment on browse damage and survival. Seeding
    herbaceous species attractive to deer decreased the likelihood of deer browsing damage to planted seedlings,
    with 33 percent of seedlings being browsed. The highest rates of browse were seen in the treatment with low
    palatability herbaceous species seeded (45 percent) and herbicide treatment (43 percent), while the control
    treatment was intermediate with 37 percent of seedlings browsed. Survival and browse damage of trees, but
    not shrubs, was assessed in February of 2017, at which time survival averaged 38 percent and browse damage
    was similar to that seen in 2015. The planting of deer-preferred herbaceous species may be a viable strategy to
    reduce the incidence of browse damage to tree seedlings on young reforestation sites in this region.

    Publication Notes

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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

    Franklin, Jennifer A.; Aldrovandi, Matthew. 2018. Hardwood establishment on compacted mine tailings after subsoiling and native ground cover seeding. In Kirschman, Julia E., comp 2018.Proceedings of the 19th biennial southern silvicultural research conference.e-General Technical  Report SRS- 234.Asheville, NC: U.S.Department of Agriculture Forest Service, Southern Research Station.444 p (pages 127-128) 2 p.

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