Trips
Thrips
Thrips Tabaci
Pathogen:
Insect
Type:
Risk to the plant:
INTERMEDIATE
DESCRIPTION
WHO CAUSES IT?
Thrips, also known as Thysanoptera, are small, elongated insects that can cause significant damage to onion crops. Thrips feed on plant tissues, especially leaves and young shoots, using their scraping mouthparts to extract cellular juices. Females lay eggs in plant tissue, and larvae emerge to feed. Thrips can complete their life cycle quickly, especially in hot, dry conditions.
SYMPTOMS
Thrips cause a range of damage to onions, including discoloration and silvering of leaves due to their feeding. Additionally, they can act as vectors for viruses and other pathogens, increasing the risk of secondary diseases.
• Discoloration and silvering of the leaves.
• Damage to tender shoots, which can result in deformation.
• General weakening of the plant and reduction in the quality and quantity of the harvest.
• It can act as a vector for viruses, aggravating plant health problems.
TEMPERATURE AND HUMIDITY
20 ºC - 30ºC
40% - 60%
HOW IS IT SPREAD?
Flight of adults, contact with infected plants, eggs laid on leaves.
HOW TO REMOVE IT?
Home remedies
There are no home treatments
Chemical treatments
• ORANGE OIL 60g/L [ME] P/S
• PARAFFIN OIL (CAS [64742-46-7]) 79% [EC] P/V
• PARAFFIN OIL (CAS [8042-47-5]) 54.6% [EW] P/V
• AZADIRACTIN 1% (AS AZADIRACTIN A) [EC] P/V
• Azadirachtin 2.6% (AS AZADIRACTIN A) [EC] P/V
• CYPERMETHRIN 5% [EC] P/V
• DELTAMETHRIN 1.5% [EW] P/V
• DELTAMETHRIN 1.57% [SC] P/V
• DELTAMETHRIN 10% [EC] P/V
• DELTAMETHRIN 2.5% [EC] P/V
• LAMBDA CYHALOTHRIN 1.5% [CS] P/V
• LAMBDA CYHALOTHRIN 10% [CS] P/V
• POTASSIUM SALTS OF FATTY ACIDS C14-C20 48% [EW] P/V
• SPINOSAD 48% [SC] P/V
• CHROMATIC TRAP
• ADHESIVE TRAP
Authorized treatments in organic farming
• ORANGE OIL 60g/L [ME] P/S
• PARAFFIN OIL (CAS [64742-46-7]) 79% [EC] P/V
• PARAFFIN OIL (CAS [8042-47-5]) 54.6% [EW] P/V
• AZADIRACTIN 1% (AS AZADIRACTIN A) [EC] P/V
• Azadirachtin 2.6% (AS AZADIRACTIN A) [EC] P/V
• LAMBDA CYHALOTHRIN 1.5% [CS] P/V
• LAMBDA CYHALOTHRIN 10% [CS] P/V
• POTASSIUM SALTS OF FATTY ACIDS C14-C20 48% [EW] P/V
• SPINOSAD 48% [SC] P/V
• CHROMATIC TRAP
• ADHESIVE TRAP
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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• Maintain a regular monitoring program to detect and treat the infestation early.
• Use colored sticky traps to capture adults and monitor their presence.
• Practice crop rotation to reduce pest pressure on the soil.
• Use thrips-resistant onion varieties when available.
• Promote natural enemies, such as predatory mites and parasitic wasps, to control the thrips population.
• Apply specific insecticides according to local recommendations when necessary.
Recommendations
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