Polillas
Onion Moth
Acrolepiopsis Assectella
Pathogen:
Insect
Type:
Risk to the plant:
INTERMEDIATE
DESCRIPTION
WHO CAUSES IT?
Acrolepiopsis assectella is an insect known as the onion moth, which is an important pathogen for onion crops worldwide. This insect has a larval phase that feeds on the leaves and bulbs of onion, causing significant damage. Adults are small gray moths that emerge from pupae in the ground. The females lay their eggs on the leaves of onions, and the larvae burrow into the plant tissues to feed.
SYMPTOMS
Onion moth causes noticeable damage to onion plants, which can significantly reduce the quality and quantity of the harvest. The larvae feed on leaves and bulbs, leaving tunnels and causing decay.
• Appearance of tunnels and galleries in the leaves and bulbs.
• Damaged, yellow or dry leaves.
• Bulbs perforated and with internal decomposition.
• Loss of plant vigor and decrease in production.
TEMPERATURE AND HUMIDITY
18 ºC - 30°C
50% - 80%
HOW IS IT SPREAD?
Flight of adults, contact with infected crop residues.
HOW TO REMOVE IT?
Home remedies
There are no home treatments
Chemical treatments
-
Treatments allowed in organic farming
-
Insect allies
PREDATORY MITES
LADYBUGS
LACEWINGS
PARASITIC WASPS
HOVERFLIES OR PARASITIC FLIES
PREDATORY BUGS
There are no natural allies
Mycodiplosis oidii (predatory mosquito)
EFFECTIVE PRODUCTS TO ELIMINATE THIS DISEASE
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Recommendations to prevent and control onion moth include integrated pest management that combines cultural, biological, and chemical practices.
• Regularly monitor crops for the presence of moths and larvae.
• Use pheromone traps to capture adults and control their population.
• Practice crop rotation to reduce pest pressure.
• Remove and destroy crop residues after harvest to prevent spread.
• Apply specific insecticides according to local recommendations.
• Encourage the presence of natural enemies, such as parasitic wasps.
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