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UK Risk Register Details for Citrus bark cracking viroid

This record was last updated on 06/06/2023

Scenario and Pathways

Scenario for Risk Register

  • show / hide
  • Pest is introduced

Pathway Assessed for Entry to UK

  • show / hide
  • Plants for planting (except seeds bulbs and tubers)

Common Pathways

  • show / hide
  • Plants for planting (except seeds bulbs and tubers)

Risk Ratings and Current Mitigations

Unmitigated Risks

Likelihood [1 - 5] 3
Spread [1 - 5] 4
Impact [1 - 5] 4
Value at Risk [1 - 5] 2
Likelihood x Impact [1 - 25] 12
UK Relative Risk Rating [1 - 125] 24

Current Mitigations

  • show / hide

Key mitigation for pest

Industry certification scheme for planting material for HSVd. Regulated non quarantine pest (Northern Ireland) on hops.



Industry Scheme

Contingency Plan



Mitigated Risks

Likelihood [1 - 5] 2
Spread [1 - 5] 4
Impact [1 - 5] 4
Value at Risk [1 - 5] 2
Likelihood x Impact [1 - 25] 8
UK Relative Risk Rating [1 - 125] 16

Proposed Actions

Proposed Actions



Management By Industry

Targeted Survey


Contingency Plan



Distribution and Pest Details


Country / Territory Status Notes
Germany Present Under containment
Cyprus Present
Slovenia Present (Limited) Present, under containment, in case eradication is impossible.
United Kingdom Absent
Greece Present
Italy Present
Türkiye Present
North America
United States Present
South America
Brazil Present
South Africa Present
Sudan Present
Tunisia Present
China Present
Israel Present
Japan Present
Central America
Cuba Present

Type of Pest

  • Virus or Viroid

Host or Industry at Risk

  • show / hide

Humulus lupulus

Major Hosts

  • Citrus aurantifolia (Christmann & Panzer) Swingle
  • Citrus aurantium subsp. aurantium Linnaeus
  • Citrus latifolia Tanaka
  • Citrus limettioides Tanaka
  • Citrus limon (Linnaeus) N.L.Burman
  • Citrus paradisi Macfadyen
  • Citrus reticulata Blanco (S. S.)
  • Citrus sinensis (Linnaeus) Osbeck
  • Humulus lupulus L.
  • Poncirus trifoliata (Linnaeus) Rafinesque
  • Citrus

Threats to Protected Cultivation

Forest Tree Pests and Pathogens

Further Information

PRA Availability

EPPO (2017)

Regulation and EPPO listing

  • show / hide

Regulated non quarantine pest (Northern Ireland). EPPO A2

Actions Indicated

  • show / hide


Statutory action will be taken.

General Comments

Pest of citrus and hops present in parts of Europe and elsewhere. PHPS certification can help in maintaining disease freedom of hop planting material.

Risk Records for this Pest