EPPO Global Database

Phytophthora ramorum(PHYTRA)

Distribution details in Netherlands

Situation
Current pest situation evaluated by EPPO on the basis of information dated 2018: Present, restricted distribution
First recorded in: 1993
Pest status declared by NPPO: Present: subject to official control, found only in public green on Rhododendron spp., Quercus rubra and Fagus sylvatica (2018-04)
From CABI Disease map 978 (2013): Present, restricted distribution
Comments
EPPO Reporting Service (2001/002) : this fungus, identifed on Rhododendron in The Netherlands is very similar to the unidentified fungus causing sudden oak death in California (US).

EPPO Reporting Service (2003/014) : nationwide survey in 2002 found P. ramorum at 22 out of 200 localities, on Rhododendron, and Viburnum. Not found in oak.

EPPO Reporting Service (2003/037) and EPPO Reporting Service (2003/133) : further details.

EPPO Reporting Service (2005/159) : percentage of affected nurseries has fallen from 4% in 2002/2003 to 0.5% in 2004/2005. P. ramorum occurs at about 2% of natural sites with Rhododendron. Found in a few Quercus rubra.

EPPO Reporting Service (2006/102) : found in two trees of Fagus sylvatica at different locations.
References
* Anonymous (2001) Annual Report 2001, Diagnostic Centre, Plant Protection Service, Wagningen, NL, 135 pp.

* NPPO of the Netherlands (2003-09, 2006-06, 2017-06, 2018-04).

* NPPO of the Netherlands - Pest status of harmful organisms in the Netherlands (Fytosignalering covering 2007, 2009, 2011, 2012, 2013, 2014, 2015).
------- Pest status based on ongoing long term monitoring for plant passport system and annual surveys (336 survey observations in 2011, 310 in 2012, 304 in 2013).

* Presentations made at the EPPO Conference on Phytophthora ramorum and other forest pests, Falmouth, Cornwall, GB, 2005-10-05/07. http://archives.eppo.org/MEETINGS/2005_meetings/ramorum_presentations/falmouth.htm

* Werres S, Marwitz R, Man in’t Veld WA, De Cock AWAM, Bonants PJM, De Weerdt M, Themann K, Ilieva E, Baayen RP (2001) Phytophthora ramorum sp. nov., a new pathogen on Rhododendron and Viburnum. Mycological Research 105(10), 1155-1165.
Situation in neighbouring countries
Country State Status
Belgium Present, restricted distribution view...
Germany Present, few occurrences view...