Residual Extractives in Western Red Cedar Shakes and Shingles after Long-Term Field Testing

Stirling, Rod
June 2010
Forest Products Journal;Jun2010, Vol. 60 Issue 4, p353
Academic Journal
Western red cedar shakes and shingles were analyzed for extractives after 25 and 33 years of exposure in a field test to better understand the extractives associated with long-term durability. Only minimal concentrations of thujaplicins were found, but plicatic acid was still present in significant quantities. Plicatic acid or other uncharacterized compounds that remain in the wood may play a more important role in the durability of shakes and shingles than previously thought.


Related Articles

  • Western redcedar extractives: Is there a role for the silviculturist? Taylor, Adam M.; Gartner, Barbara L.; Morrell, Jeffrey J. // Forest Products Journal;Mar2006, Vol. 56 Issue 3, p58 

    Understanding how silvicultural treatments and changes in the forest resource will affect wood quality characteristics, including heartwood natural durability, is a critical need for forest managers. Because heartwood properties can be affected by environmental disturbances, including...

  • Ectomycorrhizal mushroom response to partial cutting in a western hemlock--western redcedar forest. Kranabetter, J.M.; Kroeger, P. // Canadian Journal of Forest Research;Jun2001, Vol. 31 Issue 6, p978 

    Presents the results of a study to examine epigeous ectomycorrhizal mushroom richness and productivity after partial cutting in a western hemlock (Tsuga heterophylla (Raf.) Sarg.)--western redcedar (Thuja plicata Donn ex D. Don in Lamb.) forest of northwestern British Columbia. Collection of...

  • Thuja plicataexclusion in ectomycorrhiza-dominated forests: testing the role of inoculum potential of arbuscular mycorrhizal fungi. Weber, Adrian; Karst, Justine; Gilbert, Benjamin; Kimmins, J. P. // Oecologia;Apr2005, Vol. 143 Issue 1, p148 

    The ability of trees dependent on arbuscular mycorrhizal (AM) fungi to establish in ectomycorrhizal forests is unknown. On northern Vancouver Island, Canada, there are sharp boundaries between mixed red cedar (Thuja plicata)-hemlock (Tsuga heterophylla) (CH) stands, and stands of hemlock and...

  • Isolation of fungi from the surface water of river. Parveen, Shaista; Lanjewar, S.; Sharma, K.; Kutti, U. // Journal of Experimental Sciences;Oct2011, Vol. 2 Issue 10, p58 

    Water bodies play an important role in the stabilization of any civilization. India is facing a turbulent water future, as its major water source rainfall fluctuates widely, seasonally as well as regionally. Water body provides a large amount of easily accessible fresh water which is important...

  • Prediction of the Decay and Termite Resistance of Western Red Cedar Heartwood. Stirling, Rod; Morris, Paul I.; Grace, J. Kenneth // Forest Products Journal;2015, Vol. 65 Issue 3/4, p84 

    Western red cedar (WRC; Thuja plicata) is highly valued for its natural durability. Rapid methods to assess heartwood durability are needed to identify breeding stock that will ultimately yield trees with durable wood when harvested. Chromatographic methods to detect heartwood extractives have...

  • Thuja plicata. Gates, Galen D. // American Nurseryman;7/1/93, Vol. 178 Issue 1, p186 

    Features the Thuja plicata conifer tree. Adaption to rugged conditions; Other names; Description; Traits that make it desirable for landscape gardening.

  • The last word.  // New Scientist;10/28/2000, Vol. 168 Issue 2262, p109 

    Offers questions and answers related to science. Whether all animals show a tendency to evolve greater intelligence over time; The dreams of blind people; Questions regarding the flow of rain and why most natural antibiotics come from soil fungi and bacteria.

  • Effects of leaching on fungal growth and decay of western redcedar. Chedgy, Russell J.; Young Woon Lim; Breuil, Colette // Canadian Journal of Microbiology;May2009, Vol. 55 Issue 5, p578 

    We tested the effect of leaching on the concentration of western redcedar (WRC; Thuja plicata Donn ex D. Don) heartwood extractives that are known to exhibit antimicrobial activity and correlated this with fungal growth and decay. We assessed the extractive tolerance of the following fungal...

  • Evaluation of proposed test methods to determine decay resistance of natural fiber plastic composites. Lopez, Juan L.; Cooper, Paul A.; Sain, Mohini // Forest Products Journal;Dec2005, Vol. 55 Issue 12, p95 

    Methodologies for assessing the decay susceptibility of natural fiber plastic composite extrusions were evaluated. The susceptibility to fungal decay of five natural fibers (hemp, flax, rice husks, softwood and hardwood flour) in a malt extract agar medium was assessed based on weight loss of...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics