Ralstonia solanacearum race 1detected on glasshouse roses in Portugal
In 2016-2017, 4 outbreaks of Ralstonia solanacearum (EPPO A2 List) on glasshouse roses (Rosa spp.) were reported from Portugal. These findings were made following the notification of outbreaks in Dutch propagation companies which had supplied Rosa plants for planting to Portugal (either directly or via Germany). It is noted that in all glasshouses concerned, no symptoms were observed on plants of Rosa spp. Laboratory tests were carried out according to Directive 2006/63/EC. In all cases, phytosanitary measures were taken to eradicate the disease and included the destruction of the affected lots and their associated growing media, as well as the disinfection of irrigation systems, tools and equipment.
- In December 2016, R. solanacearum race 1 was detected in a glasshouse (3250 m²) producing cut flowers of roses in the parish of Landim (county of Vila Nova de Famalicão, Norte region).
- In January 2017, R. solanacearum race 1 was detected in a glasshouse producing cut flowers of roses in the municipality of Viana do Castelo (Norte region). The infected glasshouse contained 663 Rosa plants of different cultivars: Deep Water (383); Green Gene (43), Jenny (64) and Jessica (173).
- In February 2017, R. solanacearum race 1 was detected in a glasshouse producing cut flowers of roses in the parish of Avessadas (Norte region). Out of a total of 3957 plants, it was noted that 3621 were infected.
- In April 2017, R. solanacearum race 1 was detected in a glasshouse producing cut flowers of roses (5000 plants) in the parish of Sarilhos Grandes, near Lisbon.
The pest status of Ralstonia solanacearum race 1 in Portugal is officially declared as: Present, only in the greenhouses concerned, under eradication.
NPPO of Portugal (2017-01, 2017-02, 2017-03, 2017-06).