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UK Risk Register Details for Meloidogyne graminicola

Pest has been archived

This pest has been assessed for the Risk Register and is considered to pose a low risk to the UK. The information on this pest was correct as of 16/12/2021, but is no longer actively maintained. It will only be updated if new information is received which indicates the potential for a significant increase in risk to the UK.

This record was last updated on 30/10/2023

Common Names

  • Rice root-knot nematode
  • Root gall nematode
  • Root-knot nematode

Scenario and Pathways

Scenario for Risk Register

  • show / hide
  • Pest is introduced

Pathway Assessed for Entry to UK

  • show / hide
  • Plants for planting (with soil)

Common Pathways

  • show / hide
  • Plants for planting (except seeds bulbs and tubers)
  • Bulbs or tubers
  • Soil/growing medium
  • Agricultural machinery

Risk Ratings and Current Mitigations

Unmitigated Risks

Likelihood [1 - 5] 2
Spread [1 - 5] 1
Impact [1 - 5] 2
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 4
UK Relative Risk Rating [1 - 125] 20

Current Mitigations

  • show / hide

Key mitigation for pest



Industry Scheme

Contingency Plan



Mitigated Risks

Likelihood [1 - 5] 2
Spread [1 - 5] 1
Impact [1 - 5] 2
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 4
UK Relative Risk Rating [1 - 125] 20

Proposed Actions

Proposed Actions



Management By Industry

Targeted Survey


Contingency Plan



Distribution and Pest Details


Country / Territory Status Notes
Italy Present (Limited)
United Kingdom Absent
North America
United States Present
South America
Brazil Present
Colombia Present
Ecuador Present
Madagascar Present
South Africa Present
Bangladesh Present
China Present
India Present
Indonesia Present
Laos Present
Malaysia Present
Myanmar Present
Nepal Present
Pakistan Present
Philippines Present
Singapore Present
Sri Lanka Present
Thailand Present
Vietnam Present

Type of Pest

  • Nematode (Tylenchida)

Host or Industry at Risk

  • show / hide

food crops

Major Hosts

  • Allium cepa L.
  • Brassica juncea (L.) Czern.
  • Brassica oleracea L.
  • Capsicum frutescens L.
  • Cucumis sativus L.
  • Cyperaceae
  • Glycine max (L.) Merr.
  • Gramineae Adans., Nom. Cons.
  • Lactuca sativa L.
  • Oryza sativa L.
  • Petunia Juss.
  • Phaseolus vulgaris L.
  • Pisum sativum Linnaeus
  • Solanum L.
  • Spinacia oleracea L.
  • Triticum aestivum L.
  • Vicia faba L.

Threats to Protected Cultivation

  • Both protected crops and outdoor production

Forest Tree Pests and Pathogens

  • N/A

Further Information

PRA Availability

PRA not available

Regulation and EPPO listing

  • show / hide


Actions Indicated

  • show / hide


No statutory action

General Comments

Polyphagous nematode, with most impacts recorded on rice. Native to Asia, now found elsewehre including parts of Italy.

Further Information


  • show / hide

Key uncertainty for pest

Suitability of UK soil conditions and impacts on hosts other than rice.


Current distribution






UK distribution