| Overview of the evaluation of Scirtothrips dorsalis for bundles of whips and seedlings | |||||
| Rating of the likelihood of pest freedom | Almost always pest free (based on the Median). | ||||
| Percentile of the distribution | 5% | 25% | Median | 75% | 95% |
| Proportion of pest‐free bundles | 9,987 out of 10,000 bundles | 9,994 out of 10,000 bundles | 9,997 out of 10,000 bundles | 9,999 out of 10,000 bundles | 9,999.87 out of 10,000 bundles |
| Percentile of the distribution | 5% | 25% | Median | 75% | 95% |
| Proportion of infested bundles | 0.13 out of 10,000 bundles | 1 out of 10,000 bundles | 3 out of 10,000 bundles | 6 out of 10,000 bundles | 13 out of 10,000 bundles |
| Summary of the information used for the evaluation |
Possibility that the pest could become associated with the commodity The presence of the pest is doubtful in the UK, although not declared as eradicated. The adults fly and can be spread by the wind from the greenhouse where it was detected to the surroundings of the nurseries. The pest is extremely polyphagous. There are host species in the surroundings of the nurseries. An initial infestation of the pest could go undetected because symptoms are generic. Measures taken against the pest and their efficacy General measures taken by the nurseries are effective against the pest. These measures include (a) inspections, surveillance, monitoring, sampling and laboratory testing; (b) hygiene measures; (c) application of pest control products and (d) removal of infested plant material. Interception records In the EUROPHYT/TRACES‐NT database there are no records of notification of Acer plants for planting neither from the UK nor from other countries due to the presence of S. dorsalis between the years 1995 and December 2022 (EUROPHYT/TRACES‐NT, online). Shortcomings of current measures/procedures Detection can be difficult and require expert identification.
Main uncertainties
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| Overview of the evaluation of Scirtothrips dorsalis for bare root plants/trees up to 7 years old | |||||
| Rating of the likelihood of pest freedom | Almost always pest free (based on the Median). | ||||
| Percentile of the distribution | 5% | 25% | Median | 75% | 95% |
| Proportion of pest‐free plants | 9,986 out of 10,000 plants | 9,993 out of 10,000 plants | 9,996 out of 10,000 plants | 9,998 out of 10,000 plants | 9,999.4 out of 10,000 plants |
| Percentile of the distribution | 5% | 25% | Median | 75% | 95% |
| Proportion of infested plants | 0.6 out of 10,000 plants | 2 out of 10,000 plants | 4 out of 10,000 plants | 7 out of 10,000 plants | 14 out of 10,000 plants |
| Summary of the information used for the evaluation |
Possibility that the pest could become associated with the commodity The presence of the pest is doubtful in the UK, although not declared as eradicated. The adults fly and can be spread by the wind from the greenhouse where it was detected to the surroundings of the nurseries. The pest is extremely polyphagous. There are host species in the surroundings of the nurseries. An initial infestation of the pest could go undetected because symptoms are generic. Measures taken against the pest and their efficacy General measures taken by the nurseries are effective against the pest. These measures include (a) inspections, surveillance, monitoring, sampling and laboratory testing; (b) hygiene measures; (c) application of pest control products and (d) removal of infested plant material. Interception records In the EUROPHYT/TRACES‐NT database there are no records of notification of Acer plants for planting neither from the UK nor from other countries due to the presence of S. dorsalis between the years 1995 and December 2022 (EUROPHYT/TRACES‐NT, online). Shortcomings of current measures/procedures Detection can be difficult and require expert identification.
Main uncertainties
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| Overview of the evaluation of Scirtothrips dorsalis for plants in pots up to 15 years old | |||||
| Rating of the likelihood of pest freedom | Almost always pest free (based on the Median). | ||||
| Percentile of the distribution | 5% | 25% | Median | 75% | 95% |
| Proportion of pest‐free plants | 9,982 out of 10,000 plants | 9,991 out of 10,000 plants | 9,995 out of 10,000 plants | 9,997.9 out of 10,000 plants | 9,999.62 out of 10,000 plants |
| Percentile of the distribution | 5% | 25% | Median | 75% | 95% |
| Proportion of infested plants | 0.38 out of 10,000 plants | 2.1 out of 10,000 plants | 5 out of 10,000 plants | 9 out of 10,000 plants | 18 out of 10,000 plants |
| Summary of the information used for the evaluation |
Possibility that the pest could become associated with the commodity The presence of the pest is doubtful in the UK, although not declared as eradicated. The adults fly and can be spread by the wind from the greenhouse where it was detected to the surroundings of the nurseries. The pest is extremely polyphagous. There are host species in the surroundings of the nurseries. An initial infestation of the pest could go undetected because symptoms are generic and because the species is difficult to detect when overwintering in the soil. Measures taken against the pest and their efficacy General measures taken by the nurseries are effective against the pest. These measures include (a) inspections, surveillance, monitoring, sampling and laboratory testing; (b) hygiene measures; (c) application of pest control products; (d) removal of infested plant material; (e) using clean substrate. Interception records In the EUROPHYT/TRACES‐NT database there are no records of notification of Acer plants for planting neither from the UK nor from other countries due to the presence of S. dorsalis between the years 1995 and December 2022 (EUROPHYT/TRACES‐NT, online). Shortcomings of current measures/procedures Detection can be difficult especially in the soil and require expert identification.
Main uncertainties
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