| Overview of the evaluation of P. ramorum (non‐EU isolates) for graftwood/budwood | |||||
|---|---|---|---|---|---|
| Rating of the likelihood of pest freedom | Pest free with some exceptional cases (based on the median) | ||||
| Percentile of the distribution | 5% | 25% | Median | 75% | 95% |
| Proportion of pest‐free bundles | 9964 out of 10,000 bundles | 9978 out of 10,000 bundles | 9988 out of 10,000 bundles | 9994 out of 10,000 bundles | 9998.8 out of 10,000 bundles |
| Percentile of the distribution | 5% | 25% | Median | 75% | 95% |
| Proportion of infected bundles | 1.2 out of 10,000 bundles | 6 out of 10,000 bundles | 12 out of 10,000 bundles | 22 out of 10,000 bundles | 36 out of 10,000 bundles |
| Summary of the information used for the evaluation |
Possibility that the pest could become associated with the commodity Phytophthora ramorum is present in the UK with a restricted distribution. The pathogen has a wide host range including Betula pendula. The main hosts (e.g. Rhododendron spp., Larix spp. etc.) can be present either inside or in the surroundings of the nurseries. Aerial inoculum could be produced on these host plants and cause bark infections on the commodity. Measures taken against the pest and their efficacy Phytophthora ramorum is a quarantine pest in the UK and under official control. General measures taken by the nurseries are effective against the pathogen. These measures include (a) the use of certified plant material and growing media; (b) inspections, surveillance, monitoring, sampling and laboratory testing; and (c) application of plant protection products. Interception records In the EUROPHYT/TRACES‐NT database there are no records of notification of Betula plants for planting neither from the UK nor from other countries due to the presence of P. ramorum between the years 1995 and January 2024 (EUROPHYT, 2024; TRACES‐NT, 2024). Shortcomings of current measures/procedures None observed
Main uncertainties
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| Overview of the evaluation of P. ramorum (non‐EU isolates) for bare root plants | |||||
|---|---|---|---|---|---|
| Rating of the likelihood of pest freedom | Pest free with some exceptional cases (based on the median) | ||||
| Percentile of the distribution | 5% | 25% | Median | 75% | 95% |
| Proportion of pest‐free plants/bundles | 9935 out of 10,000 plants/bundles | 9961 out of 10,000 plants/bundles | 9978 out of 10,000 plants/bundles | 9990 out of 10,000 plants/bundles | 9998 out of 10,000 plants/bundles |
| Percentile of the distribution | 5% | 25% | Median | 75% | 95% |
| Proportion of infected plants/bundles | 2 out of 10,000 plants/bundles | 10 out of 10,000 plants/bundles | 22 out of 10,000 plants/bundles | 39 out of 10,000 plants/bundles | 65 out of 10,000 plants/bundles |
| Summary of the information used for the evaluation |
Possibility that the pest could become associated with the commodity Phytophthora ramorum is present in the UK with a restricted distribution. The pathogen has a wide host range including Betula pendula. The main hosts (e.g. Rhododendron spp., Larix spp. etc.) can be present either inside or in the surroundings of the nurseries. Aerial inoculum could be produced on these host plants and cause bark and leaf infections on the commodity. Measures taken against the pest and their efficacy Phytophthora ramorum is a quarantine pest in the UK and under official control. General measures taken by the nurseries are effective against the pathogen. These measures include (a) the use of certified plant material and growing media; (b) inspections, surveillance, monitoring, sampling and laboratory testing; and (c) application of plant protection products. Interception records In the EUROPHYT/TRACES‐NT database there are no records of notification of Betula plants for planting neither from the UK nor from other countries due to the presence of P. ramorum between the years 1995 and January 2024 (EUROPHYT, 2024; TRACES‐NT, 2024). Shortcomings of current measures/procedures None observed
Main uncertainties
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| Overview of the evaluation of P. ramorum (non‐EU isolates) for plants in pots | |||||
|---|---|---|---|---|---|
| Rating of the likelihood of pest freedom | Pest free with some exceptional cases (based on the median) | ||||
| Percentile of the distribution | 5% | 25% | Median | 75% | 95% |
| Proportion of pest‐free plants/bundles | 9935 out of 10,000 plants/bundles | 9961 out of 10,000 plants/bundles | 9978 out of 10,000 plants/bundles | 9990 out of 10,000 plants/bundles | 9998 out of 10,000 plants/bundles |
| Percentile of the distribution | 5% | 25% | Median | 75% | 95% |
| Proportion of infected plants/bundles | 2 out of 10,000 plants/bundles | 10 out of 10,000 plants/bundles | 22 out of 10,000 plants/bundles | 39 out of 10,000 plants/bundles | 65 out of 10,000 plants/bundles |
| Summary of the information used for the evaluation |
Possibility that the pest could become associated with the commodity Phytophthora ramorum is present in the UK with a restricted distribution. The pathogen has a wide host range including Betula pendula. The main hosts (e.g. Rhododendron spp., Larix spp. etc.) can be present either inside or in the surroundings of the nurseries. Aerial inoculum could be produced on these host plants and cause bark and leaf infections on the commodity. Measures taken against the pest and their efficacy P. ramorum is a quarantine pest in the UK and under official control. General measures taken by the nurseries are effective against the pathogen. These measures include (a) the use of certified plant material and growing media; (b) inspections, surveillance, monitoring, sampling and laboratory testing; and (c) application of plant protection products. Interception records In the EUROPHYT/TRACES‐NT database there are no records of notification of Betula plants for planting neither from the UK nor from other countries due to the presence of P. ramorum between the years 1995 and January 2024 (EUROPHYT, 2024; TRACES‐NT, 2024). Shortcomings of current measures/procedures None observed
Main uncertainties
|
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| Overview of the evaluation of P. ramorum (non‐EU isolates) for specimen trees | |||||
|---|---|---|---|---|---|
| Rating of the likelihood of pest freedom | Pest free with some exceptional cases (based on the median) | ||||
| Percentile of the distribution | 5% | 25% | Median | 75% | 95% |
| Proportion of pest‐free plants | 9915 out of 10,000 plants | 9946 out of 10,000 plants | 9969 out of 10,000 plants | 9986 out of 10,000 plants | 9997 out of 10,000 plants |
| Percentile of the distribution | 5% | 25% | Median | 75% | 95% |
| Proportion of infected plants | 3 out of 10,000 plants | 14 out of 10,000 plants | 31 out of 10,000 plants | 54 out of 10,000 plants | 85 out of 10,000 plants |
| Summary of the information used for the evaluation |
Possibility that the pest could become associated with the commodity Phytophthora ramorum is present in the UK with a restricted distribution. The pathogen has a wide host range including Betula pendula. The main hosts (e.g. Rhododendron spp., Larix spp. etc.) can be present either inside or in the surroundings of the nurseries. Aerial inoculum could be produced on these host plants and cause bark and leaf infections on the commodity. Measures taken against the pest and their efficacy Phytophthora ramorum is a quarantine pest in the UK and under official control. General measures taken by the nurseries are effective against the pathogen. These measures include (a) the use of certified plant material and growing media; (b) inspections, surveillance, monitoring, sampling and laboratory testing; and (c) application of plant protection products. Interception records In the EUROPHYT/TRACES‐NT database there are no records of notification of Betula plants for planting neither from the UK nor from other countries due to the presence of P. ramorum between the years 1995 and January 2024 (EUROPHYT, 2024; TRACES‐NT, 2024). Shortcomings of current measures/procedures None observed
Main uncertainties
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