|Sudden oak death
Sudden oak death was first identified in 1993 in Germany and The Netherlands on ornamental rhododendrons and in June 2000 from dying oaks trees in CA, USA. This is a forest disease caused by the fungal pathogen Phytophthora ramorum. P. ramorum causes 2 types of diseases, bark cankers that may kill the host and foliar blights that may serve as a reservoir for the pathogen. At present there are 38 species known to be susceptible to this pathogen, 22 of these are recognized as regulated hosts by the USDA APHIS. This fungal disease has not been found in VT.
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