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Phorodon cannabis Aphid

Practical biological control, IPM and environmental pest-management knowledge.


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Phorodon cannabis Aphid

Overview

Phorodon cannabis aphid (commonly called cannabis aphid) is a specialist aphid species associated with cannabis and hemp production systems.

It is particularly relevant in:

  • protected cannabis production
  • medicinal cannabis systems
  • hemp production
  • indoor cultivation environments

The species can establish rapidly in dense protected canopies where environmental conditions remain stable.


Identification

Typical characteristics include:

  • pale green aphids
  • elongated body shape
  • darker longitudinal striping
  • colonies on stems and undersides of leaves
  • honeydew production

Colonies may establish deep within dense canopies before becoming visible externally.


Crop symptoms

Typical symptoms include:

  • reduced plant vigour
  • sticky honeydew
  • black sooty mould
  • distorted growth
  • contamination of flowers
  • reduced crop quality

Heavy infestations may significantly affect marketability and harvest cleanliness.


Environmental drivers

Pressure is often favoured by:

  • warm stable environments
  • dense canopy structure
  • reduced airflow
  • continuous vegetative growth
  • protected indoor systems

See: - Ventilation and air movement - Plant stress - Temperature


IPM considerations

Integrated Pest Management programmes should focus on:

  • early scouting
  • canopy inspection
  • airflow management
  • environmental stability
  • hotspot mapping
  • compatible biological control
  • hygiene between crop cycles

Dense crops may hide developing colonies until populations become well established.


Biological control relevance

Potential biological control agents may include:

Programme performance depends heavily on early establishment and canopy penetration.


Monitoring strategy

Useful monitoring approaches include:

  • underside leaf inspections
  • hotspot scouting
  • winged aphid observation
  • canopy penetration checks
  • edge monitoring
  • environmental stress observation

Monitoring intervals may need shortening during warm rapid-growth periods.


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