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UK Risk Register Details for Meloidogyne mali

This record was last updated on 08/06/2022

Common Names

  • Apple root knot nematode

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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  • Plants for planting (except seeds bulbs and tubers)

Common Pathways

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  • Plants for planting (except seeds bulbs and tubers)
  • Soil/growing medium

Risk Ratings and Current Mitigations

Unmitigated Risks

Likelihood [1 - 5] 2
Spread [1 - 5] 1
Impact [1 - 5] 4
Value at Risk [1 - 5] 4
Likelihood x Impact [1 - 25] 8
UK Relative Risk Rating [1 - 125] 32

Current Mitigations

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Key mitigation for pest

Prohibition of key pathways; movement restrictions around infested UK site



Industry Scheme

Contingency Plan



Mitigated Risks

Likelihood [1 - 5] 2
Spread [1 - 5] 1
Impact [1 - 5] 4
Value at Risk [1 - 5] 4
Likelihood x Impact [1 - 25] 8
UK Relative Risk Rating [1 - 125] 32

Proposed Actions

Proposed Actions



Management By Industry

Targeted Survey


Contingency Plan



Distribution and Pest Details


Country / Territory Status Notes
United Kingdom Present (Limited)
Belgium Present
France Absent pest eradicated.
Netherlands Present (Limited)
Italy Present (Limited)
North America
United States Present (Limited)
South Korea Present
Japan Present

Type of Pest

  • Nematode (Tylenchida)

Host or Industry at Risk

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Malus, Ulmus

Major Hosts

  • Acer freemanii (A. x freemanii) E.Murray
  • Acer palmatum Thunb. Ex Murr.
  • Acer pseudoplatanus L.
  • Achyranthes japonica (Miq.) Nakai
  • Apium graveolens L.
  • Brassica L.
  • Capsicum L.
  • Castanea crenata Sieb. & Zucc.
  • Cucumis sativus L.
  • Euonymus kiautschovica Loes.
  • Ficus carica L.
  • Geum L.
  • Glycine max (L.) Merr.
  • Lagerstroemia indica L.
  • Solanum lycopersicum L.
  • Maclura Nutt.
  • Malus domestica Borkhausen
  • Malus hupehensis (Pamp.) Rehd.
  • Malus prunifolia var. prunifolia (Willd.) Borkh.
  • Malus pumila Mill.
  • Malus sieboldii (Regel) Rehder
  • Malus toringo var. toringo (Sieb.) Sieb. Ex De Vriese
  • Malus x purpurea (Barb.) Rehd.
  • Morus alba L.
  • Morus bombycis Koidz.
  • Morus latifolia Poir.
  • Prunus serrula Franch.
  • Prunus yedoensis Matsumura
  • Quercus robur L.
  • Rosa L.
  • Rubus fruticosus Linnaeus
  • Rubus idaeus L.
  • Solanum melongena L.
  • Sorbus aucuparia var. aucuparia L.
  • Taxus baccata L.
  • Trifolium repens L.
  • Ulmus glabra Huds. em. Moss
  • Ulmus x hollandica Miller
  • Ulmus japonica (Rehd.) Sarg.
  • Ulmus parvifolia Jacq.
  • Vitis vinifera L.
  • Zelkova serrata (Thunb. Ex Murr.) Makino
  • Fagus sylvatica L.

Threats to Protected Cultivation

Forest Tree Pests and Pathogens

  • Broadleaved

Further Information

PRA Availability

Netherlands (2014), EPPO (2017)

Regulation and EPPO listing

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Actions Indicated

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Statutory action on planting material of Malus and Ulmus

General Comments

UK (along with certain other European countries) received potentially infested trees in 1992. Nematode populations have recently been detected at least one site in England which received these trees. Main impacts are on apple, mulberry and perhaps elm, and industry should source such material carefully.

Further Information


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Key uncertainty for pest

How many other UK sites may be infested but undetected.


Current distribution






UK distribution

Risk Records for this Pest