Sudden Oak Death Alert - Update
Gail Ruhl, Senior Plant Disease Diagnostician/ Interim P&PDL Director, Purdue University
On March 8, 2004, Claude R. Knighten, Public Affairs Specialist for USDA/APHIS Plant Protection and Quarantine, reported the confirmation of Phytophthora ramorum, the fungus-like causal organism of sudden oak death (SOD) disease on six varieties of camellia samples taken from Monrovia Nursery, in Azusa, California. Hosts and associated plants were destroyed.
of July 1, 2004, 18 states have reported positive confirmations
of Phytophthora ramorum, the fungus-like causal agent
of Sudden Oak Death, on nursery stock originating from a large
nursery in southern California. There is important news in
the current update about a confirmation of P. ramorum on
a mature red oak tree located in a 192 acre forested country
park in Nassau County, NY. British Columbia has also confirmed
the presence of P. ramorum on nursery stock shipped
into Canada. On June 23, 2004, five
new hosts were added to the "APHIS list of Hosts and
Associated Plants." A revised host list (August 1, 2005)
can be viewed here.
Indiana established an Emergency Quarantine of California nursery stock susceptible to Sudden Oak Death on March 30, 2004. (http://www.in.gov/dnr/entomolo/programs/SOD.htm)
A list of states with restrictions for movement of host material
susceptible to Sudden Oak Death from California can be found
at the following link on the CDFA
You can also obtain additional information from
New Host Reports
P. ramorum genome sequenced
Announces Funding for Oak Disease Containment
to conduct national survey on sudden oak death
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Information listed is valid only for the state of Indiana.