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

9,967

out of 10,000 plants

9,986

out of 10,000 plants

9,994

out of 10,000 plants

9,998

out of 10,000 plants

9,999.9

out of 10,000 plants

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

0.1

out of 10,000 plants

2

out of 10,000 plants

6

out of 10,000 plants

14

out of 10,000 plants

33

out of 10,000 plants

Summary of the information used for the evaluation

Possibility that the pest could become associated with the commodity

The pathogen is not known to be present in the Zhenjiang province. In addition, no suitable telial hosts are known to be present in the surroundings of the nursery, making infection of the commodity by means of basidiospores unlikely. The pathogen may go undetected during inspection before export because an asymptomatic period of 18 months has been reported.

Measures taken against the pest and their efficacy

Fungicide treatments (most of active ingredients are systemic) are expected to reduce the likelihood of infection of the pathogen and the rate of colonisation of needles. The official inspections during production and before export are expected to have some effects in detecting the pathogen. However, an asymptomatic period of at least 18 months is reported during which infection cannot be detected visually.

Interception records

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

Shortcomings of current measures/procedures

No relevant shortcomings.

Main uncertainties
  • Presence of the pathogen in the nursery and in the surroundings.
  • If laboratory analyses are performed.
  • If the fungicides are rotated in order to reduce the likelihood of development of resistant strains of the pathogen.