UK Risk Register Details for Clavibacter michiganensis subsp. sepedonicus

Common Names

  • Bacterial ring rot of potato
  • Potato Ring Rot
  • Ring rot of potato
  • Vascular wilt of potato

Scenario and Pathways

Scenario for Risk Register

  • show / hide
  • Pest is introduced

Pathway Assessed for Entry to UK

  • show / hide
  • Bulbs or tubers

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

Current Mitigations

  • show / hide

Key mitigation for pest

EU regulated pest, and industry safe havens scheme



Industry Scheme

Contingency Plan



Mitigated Risks

Likelihood [1 - 5] 2
Spread [1 - 5] 2
Impact [1 - 5] 4
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 8
UK Relative Risk Rating [1 - 125] 40

Proposed Actions

Proposed Actions



Management By Industry

Targeted Survey


Contingency Plan



Distribution and Pest Details


Country Status Notes
Europe Present
Bulgaria Present
Belarus Present
Czech Republic Present
Germany Present
Estonia Present
Finland Present under eradication
United Kingdom Absent
Greece Present
Lithuania Present
Latvia Present
Netherlands Present under eradication
Norway Present
Poland Present
Romania Present
Russia Present
Sweden Present
Slovakia Present
Turkey Present
Ukraine Present
North America Present
Canada Present
United States Present
Asia Present
China Present
Japan Present
North Korea Present
South Korea Present
Kazakhstan Present
Pakistan Present
Taiwan Present
Uzbekistan Present

Type of Pest

  • Bacterium

Host or Industry at Risk

  • show / hide

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


Actions Indicated

  • show / hide


Statutory action against findings.

General Comments

Pest that is regulated well at the EU level. There have been successful recent eradications. Will be managed by the industry through careful sourcing of quality/clean seed.