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. 2022 Feb 8;20(2):e07077. doi: 10.2903/j.efsa.2022.7077
Rating of the likelihood of pest freedom Very frequently pest free (based on the Median).
Percentile of the distribution 5% 25% Median 75% 95%
Proportion of pest‐free plants

9,478

out of 10,000 plants

9,657

out of 10,000 plants

9,791

out of 10,000 plants

9,895

out of 10,000 plants

9,967

out of 10,000 plants

Percentile of the distribution 5% 25% Median 75% 95%
Proportion of infected plants

33

out of 10,000 plants

105

out of 10,000 plants

209

out of 10,000 plants

343

out of 10,000 plants

522

out of 10,000 plants

Summary of the information used for the evaluation

Possibility that the pest could become associated with the commodity

Pinus parviflora is a confirmed host of the pathogen. The pathogen is present in the province and suitable hosts, including P. parviflora, are present in the surrounding of the nursery. The pathogen could enter the nursery and spread within the nursery mainly by spores disseminated by rain/wind and by contaminated pruning tools. Infected plants may remain asymptomatic hampering a prompt detection of the pathogen during inspections.

Measures taken against the pest and their efficacy

The fungicide treatments are expected to reduce the rates of infection.

Interception records

In the EUROPHYT/TRACES‐NT database, there are no records of notification of Pinus parviflora and P. thunbergii plants neither from China nor from other countries due to the presence of Pestalotiopsis disseminata and P. microspora between the years 1995 and May 2021 (EUROPHYT/TRACES‐NT, online).

Shortcomings of current measures/procedures

Inspections are mainly devoted to plants displaying symptoms. As plants infected by the pathogen could remain asymptomatic for a long period of time, in order to detect the presence of the pathogen laboratory analysis would be necessary.

Main uncertainties
  • The level of effectiveness of each active ingredient against the pathogen.
  • If the fungicides are rotated in order to reduce the likelihood of development of resistant strains of the pathogen.
  • The length and prevalence of the asymptomatic period.