UK Risk Register Details for Synchytrium endobioticum

Common Names

  • Black scab of potato
  • Black wart of potato
  • Potato wart
  • Wart disease of potato
  • Wart of potato

Scenario and Pathways

Scenario for Risk Register

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  • Pest spreads to maximum extent

Pathway Assessed for Entry to UK

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Common Pathways

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This section is currently being developed as part of the next phase of the Risk Register.

Risk Ratings and Current Mitigations

Unmitigated Risks

Likelihood [1 - 5] 3
Spread [1 - 5] 2
Impact [1 - 5] 3
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 9
UK Relative Risk Rating [1 - 125] 45

Current Mitigations

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Key mitigation for pest

EU regulated pest



Industry Scheme

Contingency Plan



Mitigated Risks

Likelihood [1 - 5] 1
Spread [1 - 5] 2
Impact [1 - 5] 3
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 3
UK Relative Risk Rating [1 - 125] 15

Proposed Actions

Proposed Actions



Management By Industry

Targeted Survey


Contingency Plan



Distribution and Pest Details


Country Status Notes
Bulgaria Present
Belarus Present
Switzerland Present
Czech Republic Present
Germany Present
Denmark Present
Finland Present
Faroe Islands Present
United Kingdom Present (Limited)
Greece Present
Ireland Present
Italy Present
Luxembourg Present
Montenegro Present
Netherlands Present
Norway Present
Poland Present
Romania Present
Russia Present
Sweden Present
Slovakia Present
Turkey Present
Ukraine Present
North America
Canada Present
South America
Bolivia Present
Ecuador Present
Falkland Islands Present
Peru Present
New Zealand Present
Tunisia Present
South Africa Present
Armenia Present
Bhutan Present
Georgia Present
India Present
Nepal Present

Type of Pest

  • Fungus

Host or Industry at Risk

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Solanum tuberosum

Major Hosts

  • Solanum tuberosum L.

Threats to Protected Cultivation

Forest Tree Pests and Pathogens

Further Information

PRA Availability

PRA not available

EU and EPPO Listing

EC IAII , Council Directive 69/464/EEC, EPPO A2

Actions Indicated

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No current Actions Indicated

General Comments

Long experience of successful control through regulation. Risks from new pathotypes needs to be kept under review in collaboration with other EU MS.

Risk Records for this Pest