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Onion Thrips
Overview
Onion thrips (Thrips tabaci) is an important thrips species in onions, alliums and outdoor vegetable systems.
It may also occur in protected crops and ornamental systems.
Crop relevance
Important in:
- onions
- leeks
- garlic
- alliums
- outdoor vegetables
Symptoms
- silvering
- streaking
- leaf scarring
- reduced vigour
- distorted foliage
Environmental drivers
Pressure often increases during:
- warm dry weather
- crop stress
- dry canopy conditions
- prolonged stable weather
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Commonly affected crops
Additional IPM notes
Onion thrips can affect alliums, herbs, ornamentals and protected crops.
It may feed in tight leaf folds and protected growing points, making early detection difficult.
Symptoms include silvering, streaking and reduced plant quality.
Monitoring should include direct plant inspections, not just sticky traps, because populations may remain hidden inside foliage.