UK Risk Register Details for Ditylenchus destructor

Common Names

  • Eelworm, potato
  • Eelworm, potato tuber
  • Iris nematode
  • Nematode, potato rot
  • Potato root nematode
  • Potato tuber nematode

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] 2
Spread [1 - 5] 1
Impact [1 - 5] 3
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 6
UK Relative Risk Rating [1 - 125] 30

Current Mitigations

  • show / hide

Key mitigation for pest

EU regulated pest



Industry Scheme

Contingency Plan



Mitigated Risks

Likelihood [1 - 5] 1
Spread [1 - 5] 1
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
Albania Present
Austria Present
Belgium Present
Bulgaria Present
Belarus Present
Czech Republic Present
Germany Present
Estonia Present
France Present
United Kingdom Present (Unknown Distribution)
Greece Present
Hungary Present
Ireland Present
Lithuania Present
Luxembourg Present
Latvia Present
Moldova Present
Malta Present
Netherlands Present
Norway Present
Poland Present
Romania Present
Russia Present
Sweden Present
Slovakia Present
Turkey Present
North America
Canada Present
Mexico Present
United States Present
South America
Ecuador Present
South Africa Present
Azerbaijan Present
Brunei Present
China Present
Iran Present
Japan Present
Kyrgyzstan Present
South Korea Present
Kazakhstan Present
Malaysia Present
Pakistan Present
Saudi Arabia Present
Tajikistan Present
Uzbekistan Present

Type of Pest

  • Nematode (Tylenchida)

Host or Industry at Risk

  • show / hide

Solanum tuberosum, bulbs

Major Hosts

  • Gladiolus L.
  • Hyacinthus L.
  • Iris x hollandica Hortulanorum
  • Solanum tuberosum L.
  • Tigridia pavonia (L.F.) Ker-Gawl.
  • Tulipa hybrids
  • Crocus

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 on regulated hosts

General Comments

EU regulated polyphagous nematode pest present in parts of the UK. Marketing schemes and good practice help to reduce impacts

Risk Records for this Pest