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Potato moth or Guatemalan potato moth: what it is, how it originates, and how to eliminate it effectively.
Potato Moth Or Guatemalan Moth
Tecia Solanivora
Pathogen:
Insect
Type:
Risk to the plant:
INTERMEDIATE
DESCRIPTION
WHO CAUSES IT?
Tecia solanivora, known as the potato moth or Guatemalan moth, is a lepidopteran insect that mainly affects potato crops. The life cycle of the moth begins with laying eggs on or near potato tubers. The emerging larvae feed on the tubers, causing significant damage. Once the larvae complete their development, they pupate and emerge as adults, repeating the cycle. This insect can have several generations throughout a growing season, especially in warm climates.
SYMPTOMS
The potato moth causes damage to the tubers, where the larvae dig tunnels while feeding on the tissues. This damage reduces the quality of the tubers and can make them more susceptible to secondary infections. In addition, damaged tubers can emit an unpleasant odor and lose their commercial value.
• Dig tunnels in the potato tubers.
• Decrease in the quality of tubers.
• Unpleasant odor emitted by damaged tubers.
• Greater susceptibility to secondary infections.
TEMPERATURE AND HUMIDITY
22°C - 30°C
70% - 90%
HOW IS IT SPREAD?
Flight, direct contact with infected tubers, contaminated growing tools.
HOW TO REMOVE IT?
Home remedies
There are no home treatments
Chemical treatments
• AZADIRACTIN 1% (AS AZADIRACTIN A) [EC] P/V
• Azadirachtin 2.6% (AS AZADIRACTIN A) [EC] P/V
• CYPERMETHRIN 5% [EC] P/V
• CYPERMETHRIN 50% [EC] P/V
• CHLORANTRANILIPROL 20% [SC] P/V
• DELTAMETHRIN 1.57% [SC] P/V
• DELTAMETHRIN 10% [EC] P/V
• DELTAMETHRIN 2.5% [EW] P/V
• LAMBDA CYHALOTHRIN 0.0015% [ME] P/V
• LAMBDA CYHALOTHRIN 5% [EG] P/P
• LAMBDA CYHALOTHRIN 5% + CHLORANTRANILIPROL 10% [ZC] P/V
• Tecia solanivora (Pheromone)
Treatments allowed in organic farming
• AZADIRACTIN 1% (AS AZADIRACTIN A) [EC] P/V
• Azadirachtin 2.6% (AS AZADIRACTIN A) [EC] P/V
• LAMBDA CYHALOTHRIN 0.0015% [ME] P/V
• LAMBDA CYHALOTHRIN 5% [EG] P/P
• LAMBDA CYHALOTHRIN 5% + CHLORANTRANILIPROL 10% [ZC] P/V
• Tecia solanivora (Pheromone)
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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• Regularly monitor crops to detect the presence of the moth.
• Apply specific insecticide treatments at critical moments of development.
• Store tubers in cool, dark places to reduce moth activity.
• Use pheromone traps to monitor and control populations.
• Practice crop rotation to interrupt the moth's life cycle.
• Eliminate damaged tubers to prevent the spread of the pest.
Recommendations
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