Summary of the Express Pest Risk Analysis for Tomato yellow ring virus

PRA area: Poland

Described of the endangered area: Tomato crops– central Poland; Ornamental plants crops– the entire PRA area

Main conclusions

Tomato yellow ring virus may cause serious losses in cultivations of tomato, potato, ornamental plants. Virus transfer easily in mechanical way. Therefore there is high risk that the virus may be delivered unconsciously over and beetween crops (especially when infections are asymptomatic)

Additionally, risk of TYRV spread increases if vectors (Frankliniella occidentalis and Thrips tabaci) occur.

Virus was detected in Poland in tomato crops (during one vegetation cycle) (Zarzyńska-Nowak et. al 2016). Probably, virus was transfered to Poland with tomato seedlings. There is no more information of virus occurence in PRA area.

TYRV has broad host range but was reported in most cases in tomato crops along with Tomato spotted wilt virus (TSWV).

Phytosanitary risk for the endangered area

(Individual ratings for likelihood of entry and establishment, and for magnitude of spread and impact are provided in thedocument)

High

☐

Moderate

X

Low

☐

Level of uncertainty of assessment

(see Q 18 for the justification of the rating. Individual ratings of uncertainty of entry, establishment, spread and impact are provided in the document)

High

X

Moderate

☐

Low

☐

Other recommendations:

·         Controls of imported propagation material

·         Monitoring of tomato and potato crops

·         Vectors– Frankliniella occidentalis and Thrips tabaci– monitoring

·         Fruit and ornamental plant producers need to be informed about import requirements and use only certified viroid-free propagation material