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    Author(s): G.T. KirkerA.B. BlodgettS.T. LebowC.A. Clausen
    Date: 2012
    Source: IRG/WP
    Publication Series: Proceedings - Paper (PR-P)
    Station: Forest Products Laboratory
    PDF: Download Publication  (672.26 KB)


    Nine wood species are being evaluated in above ground field studies in Mississippi and Wisconsin. Candidate naturally durable wood (NDW) species are being rated at yearly intervals for resistance to decay, cupping, and checking. Field ratings after 12 months exposure are presented. To date, Paulownia tomentosa (PAW) and southern yellow pine (SYP) are least durable and cedars are the most durable in above ground exposure. Wood samples are being taken from the deck-boards and subjected to chemical analysis using GC-MS. Fatty acids from NDW species were extracted, derivatized, and analyzed along with commercial fatty acid methyl ester (FAME) standards. With few exceptions, results indicate that FAMEs are more abundant in NDW species. However, preliminary bioassays found no inhibition of select wood decay fungi by FAMEs at naturally occurring concentrations.

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    Kirker, G.T.; Blodgett, A.B.; Lebow, S.T.; Clausen, C.A. 2012. Above ground field evaluation and GC-MS analysis of naturally durable wood species. In: Proceedings IRG Annual Meeting (ISSN 2000-8953) IRG/WP 12-10764, Kuala Lumpur, Malaysia, 2012 May 6-10.


    wood durability, fatty acids, extractives, GC-MS, above ground testing

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