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UK Risk Register Details for Phytophthora citrophthora

This record was last updated on 25/01/2021

Common Names

  • Brown rot of citrus
  • Foot rot of citrus
  • Gummosis of citrus
  • Root rot of citrus

Scenario and Pathways

Scenario for Risk Register

  • show / hide

Pathway Assessed for Entry to UK

  • show / hide

Common Pathways

  • show / hide

Risk Ratings and Current Mitigations

Unmitigated Risks

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

Current Mitigations

  • show / hide

Key mitigation for pest



Industry Scheme

Contingency Plan



Mitigated Risks

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

Proposed Actions

Proposed Actions



Management By Industry

Targeted Survey


Contingency Plan



Distribution and Pest Details


Country / Territory Status Notes
United Kingdom Present (Unknown Distribution)
Bulgaria Present
Cyprus Present
Czech Republic Present
France Present
Greece Present
Hungary Present
Italy Present
Poland Present
Portugal Present
Russia Present
Slovenia Present
Spain Present
Switzerland Present
Türkiye Present
North America
Mexico Present
United States Present
South America
Argentina Present
Brazil Present
Chile Present
Ecuador Present
French Guiana Present
Guyana Present
Peru Present
Suriname Present
Uruguay Present
Venezuela Present
Australia Present
Fiji Present
New Caledonia Present
New Zealand Present
Algeria Present
Angola Present
Congo (Democratic Rep.) Present
Cote d'Ivoire Present
Egypt Present
Ethiopia Present
Kenya Present
Mauritius Present
Morocco Present
Mozambique Present
Senegal Present
South Africa Present
Tunisia Present
Zambia Present
Zimbabwe Present
Bangladesh Present
China Present
Georgia Present
Hong Kong Present
India Present
Indonesia Present
Iraq Present
Israel Present
Japan Present
Jordan Present
Lebanon Present
Malaysia Present
Pakistan Present
Philippines Present
South Korea Present
Taiwan Present
Thailand Present
Vietnam Present
Yemen Present
Central America
Barbados Present
Costa Rica Present
Cuba Present
Dominican Republic Present
El Salvador Present
Guadeloupe Present
Guatemala Present
Haiti Present
Jamaica Present
Martinique Present
Panama Present
Puerto Rico Present
Trinidad and Tobago Present

Type of Pest

  • Oomycete

Host or Industry at Risk

  • show / hide

Major Hosts

  • Abies lasiocarpa var. arizonica Nutt.
  • Aesculus hippocastanum L.
  • Buxus L.
  • Castanea sativa Mill.
  • Chamaecyparis lawsoniana (Murr.) Parl.
  • Citrullus lanatus (Thunb.) Matsum. & Nakai
  • Citrus clementina
  • Citrus limon (Linnaeus) N.L.Burman
  • Citrus maxima (Burman) Merrill
  • Citrus reticulata Blanco (S. S.)
  • Citrus sinensis (Linnaeus) Osbeck
  • Diospyros kaki L.
  • Feijoa sellowiana Berg
  • Fortunella Swing.
  • Fragaria ananassa (F. x ananassa) Duch.
  • Juglans regia L.
  • Lavandula angustifolia Mill.
  • Ligustrum vulgare L.
  • Nothofagus obliqua (Mirbel) Oerst./Blume
  • Pandorea jasminoides (Lindl.) K.Schum.
  • Pelargonium graveolens L'Herit. Ex Ait.
  • Picea abies (L.) H. Karst.
  • Pistacia vera L.
  • Poncirus Rafin.
  • Prunus armeniaca L.
  • Prunus avium ssp./var. avium L.
  • Prunus dulcis (Mill.) D.A.Webb
  • Ribes lobbii A.Gray
  • Ribes sanguineum Pursh
  • Salvia rosmarinus Spenner
  • Sciadopitys verticillata (Thunb.) Sieb. & Zucc.
  • Solanum tuberosum L.
  • Syringa vulgaris L.
  • Theobroma cacao L.
  • Vaccinium L.
  • Citrus
  • Actinidia deliciosa (A. Chev.) Liang & A.R. Ferg.

Threats to Protected Cultivation

Forest Tree Pests and Pathogens

Further Information

PRA Availability

PRA not available

Regulation and EPPO listing

  • show / hide

Regulated non quarantine pest

Actions Indicated

  • show / hide


No current Actions Indicated

General Comments

The Risk Register entry for this pest is extremely incomplete and it cannot be compared with other pests on the Risk Register at the current time. As this is a Regulated Non Quarantine Pest (RNQP) listed in the legislation, we are making available the information we have gathered on the pest so far. It is possible that we will add new information to this pest entry in due course, but as there are a great many RNQPs this may take some time.

Risk Records for this Pest