Summary of the Express Pest Risk Analysis for Xiphinema californicum Lamberti and Bleve-Zacheo, 1979

PRA area:  Poland

Describe the endangered area: the entire PRA area

Main conclusions

Xiphinema californicum is a vector of three viruses (Tobacco ringspot virus, Tomato ringspot virus and Cherry rasp leaf virus). These plant viruses infect important cultivated species like: apple tree, maize, wheat.

Xiphinema californicum is polyphagous species such as others of Longidoridae family. List of host plants may therefore be longer. Potential risk of losses in crops is low becouse of climatic conditions (even despite high adaptive capacity of Xiphinema californicum) in PRA area at the moment. The pest may appear and cause serious crop losses in PRA area in case of climatic changes.

Rating of the likelihood of entry: Low

Pest may be transfer with soil.

Rating of the likelihood of establishment outdoors and in protected conditions: Low

Pest probably will not survive in PRA area, becouse of climatic conditions.

Rating of the likelihood of spread: Moderate

Only if pest will be able to survive under climatic conditions.

Rating of the likelihood of impact without phytosanitary measures: High

Only if pest will be able to survive under climatic conditions.

Potential risk or losses caused by this pest are low becouse of climatic conditions in PRA area at the moment. The assessment should be repeated in case of climatic changes.

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

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

Moderate

Other recommendations:

Systematic controls of soil nematodes occurence (including X. californicum)