Susceptibility of larch, hemlock, Sitka spruce, and Douglas-fir to Phytophthora ramorum

Gary Chastagner; Kathy Riley; Marianne Elliott

Treesearch

Susceptibility of larch, hemlock, Sitka spruce, and Douglas-fir to Phytophthora ramorum

Informally Refereed

Authors:

Gary Chastagner, Kathy Riley, Marianne Elliott

Year:

2013

Type:

General Technical Report

Station:

Pacific Southwest Research Station

Source:

In: Frankel, S.J.; Kliejunas, J.T.; Palmieri, K.M.; Alexander, J.M. tech. coords. Proceedings of the sudden oak death fifth science symposium. Gen. Tech. Rep. PSW-GTR-243. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station: 77-79

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Abstract

The recent determination that Phytophthora ramorum is causing bleeding stem cankers on Japanese larch (Larix kaempferi (Lam.) Carrière) in the United Kingdom (Forestry Commission 2012, Webber et al. 2010), and that inoculum from this host appears to have resulted in disease and canker development on other conifers, including western hemlock (Tsuga heterophylla (Raf.) Sarg.), Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), grand fir (Abies grandis (Douglas ex D. Don) Lindl.), and Sitka spruce (Picea sitchensis (Bong.) Carrière), potentially has profound implications for the timber industry and forests in the United States Pacific Northwest (PNW). A clearer understanding of the susceptibility of these conifers to P. ramorum is needed to assess the risk of this occurring in the PNW.

Parent Publication

Proceedings of the sudden oak death fifth science symposium

Keywords

Sudden oak death, Phytophthora ramorum, invasive species, tanoak, Notholithocarpus densiflorus, coast live oak, Quercus agrifolia, Japanese larch, Larix kaempferi

Citation

Chastagner, Gary; Riley, Kathy; Elliott, Marianne. 2013. Susceptibility of larch, hemlock, Sitka spruce, and Douglas-fir to Phytophthora ramorum. In: Frankel, S.J.; Kliejunas, J.T.; Palmieri, K.M.; Alexander, J.M. tech. coords. Proceedings of the sudden oak death fifth science symposium. Gen. Tech. Rep. PSW-GTR-243. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station: 77-79.