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    Author(s): Jaroslaw Nowak; Alexander L. Friend
    Date: 2006
    Source: Tree Physiology 26, 1207-1215.
    Publication Series: Scientific Journal (JRNL)
    Station: North Central Research Station
    PDF: View PDF  (101.7 KB)

    Description

    In response to concerns about aluminum and HCl exposure associated with rocket motor testing and launches, survival and growth of full-sib families of loblolly pine (Pinus taeda L.) and slash pine (Pinus elliottii Engelm.) were evaluated in a nursery bed experiment. Each species was exposed to a single soil application of aluminum chloride (0.33 M AlCl3, pH 2.5), hydrochloric acid (0.39 M HCl, pH 0.6) or water, with or without mycorrhizal inoculation with Pisolithus tinctorius (Coker and Couch). After 20 weeks without inoculation, survival in AlCl3 and HCl treatments averaged 52% for loblolly pine and 72% for slash pine. Inoculation improved survival of loblolly pine, receiving HCl from 49 to 73%, and of those receiving AlCl3, from 55 to 90%. Inoculation also resulted in improved survival and growth of individual families in AlCl3, but not in HCl treatments. Results illustrate the relative resistance of both pine species to the acute treatments supplied, the improvement in resistance associated with mycorrhizal inoculation and the importance of field testing, following hydroponic screening, to verify the resistance to soil-supplied stresses.

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    Citation

    Nowak, Jaroslaw; Friend, Alexander L. 2006. Loblolly pine and slash pine responses to acute aluminum and acid exposures. Tree Physiology 26, 1207-1215.

    Keywords

    Acute acidity exposure, aluminum resistance, aluminum tolerance, aluminum toxicity, genetic variation, mycorrhizae, Pinus elliottii, Pinus taeda, Pisolithus tinctorius, soil acidity, solid rocket motor testing.

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