UK Risk Register Details for Synchytrium endobioticum

This record was last updated on 12/01/2021

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

  • show / hide
  • Pest spreads to maximum extent

Pathway Assessed for Entry to UK

  • show / hide

Common Pathways

  • show / hide
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

  • show / hide

Key mitigation for pest

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

Type of Pest

  • Fungus

Host or Industry at Risk

  • show / hide

Solanum tuberosum

Major Hosts

  • Solanum L.
  • Solanum tuberosum L.
  • Plants (general)

Threats to Protected Cultivation

Forest Tree Pests and Pathogens

Further Information

PRA Availability

PRA not available

Regulation and EPPO listing

  • show / hide

Regulated quarantine pest, EPPO A2

Actions Indicated

  • show / hide


Statutory action

General Comments

Fungal pest of potatoes. Long experience of successful control through regulation. Risks from new pathotypes needs to be kept under review in collaboration with other potato growing countries.

Risk Records for this Pest