총 692페이지

From:
Forestry Commission
Published
20 October 2021
Last updated
10 March 2022 ? See all updates
Phytophthora pluvialis, is a fungus-like pathogen known to affect a variety of trees including
western hemlock, tanoak, pine (Pinus radiata, Pinus patula and Pinus strobus) and Douglas-fir.
It was originally reported in Oregon, USA in 2013 on tanoak and Douglas fir and was
subsequently identified as the pathogen responsible for ’red needle cast’ of radiata pine in New
Zealand.
Phytophthora pluvialis was discovered in a woodland in Cornwall in September 2021, where it
was found to be affecting mature western hemlock and Douglas-fir trees. Following extensive
surveillance, further outbreaks have been found in Cornwall, Devon, Cumbria, Surrey and at
multiple sites in Scotland and Wales. For further information on the Scotland finding and
management approach please visit the Scottish Forestry website. For further information on
the findings in Wales please visit the Welsh Government website.
Phytophthora pluvialis lesions on a tree stem
Example of Phytophthora pluvialis lesions on a tree stem.
Symptoms
Phytophthora pluvialis is known to cause needle cast, shoot dieback, and lesions on the stem,
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