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Willow-Carrot Aphid
Overview
Willow-carrot aphid (Cavariella aegopodii) is an aphid species associated with carrots, umbellifer crops and willow as an alternate host.
It is important because it can affect crop quality and may be associated with virus transmission risk in susceptible crops.
Symptoms
- Aphid colonies on foliage
- Leaf distortion
- Yellowing or reduced vigour
- Sticky honeydew where colonies are dense
- Reduced crop quality under heavy pressure
Host relevance
Relevant crops and hosts include:
- carrots
- celery
- parsley
- other umbellifers
- willow as an alternate host
IPM relevance
Monitoring should focus on migration periods, crop edges and early colony establishment.
Key considerations:
- winged aphid movement
- crop stage sensitivity
- virus risk
- surrounding host plants
- field edge pressure
Biological control relevance
Natural enemies may assist suppression, but prevention and early monitoring are important where virus risk is relevant.