Occurrence of Discula destructiva in Germany
The NPPO of Germany informed the EPPO Secretariat of the occurrence of Discula destructiva in Germany (Bayern and Saarland). D. destructiva was detected for the first time on Cornus florida in Bayern (Stinzing & Lang, 2003). The plants showed necrotic symptoms on leaves and twigs. The plants had been imported privately from the USA in 1989. In June 2003, another occurrence of D. destructiva in a C. nuttallii plant was detected in a private garden in Saarland. The plant originated from the Netherlands. In both cases, infected plants were destroyed, and no new occurrence was detected in the neighbourhoods. However, according to the authors mentioned above, Cornus plants infected with D. destructiva have been detected several times in nurseries in various regions of Germany. This could suggest that the disease is more widespread than originally thought. The declared pest status of D. destructiva in Germany is: Present, few outbreaks, to be determined by further monitoring.
NPPO of Germany, 2003-09.
Stinzing, A.; Lang, K.J.(2003) [Dogwood anthracnose. First detection of Discula destructiva on Cornus florida in Germany.]
Nachrichtenblatt des Deutschen Pflanzenschutdienstes, 55(1), p 1-5.