Zanahoria
How to recognize and combat carrot weevil
Carrot Weevil
Insect
Type:
Risk to the plant:
INTERMEDIATE
Listronotus Dauci
Pathogen:
Gorgojos
WHO CAUSES IT?
Listronotus dauci is a beetle belonging to the family Curculionidae, commonly known as the carrot weevil. This insect goes through several stages in its development: egg, larva, pupa and adult. Adults emerge in spring and search for carrots to feed on and lay their eggs in the nearby soil. The larvae hatch and move to the roots of the carrots, where they feed and develop. After completing their larval development, they pupate in the soil and eventually emerge as adults to restart the cycle. Adults can live for several months, and under suitable conditions, can produce several generations per year.
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SYMPTOMS
The carrot weevil causes a disease in carrots that can significantly affect their quality and yield. The main damage is caused by larvae feeding on the roots, which can lead to deformation, stunted growth and, in severe cases, death of the plant. Affected carrots show visible symptoms on both the aerial part and the roots.
- Holes and tunnels in the roots.
- Deformations and scars on carrots.
- Wilting and chlorosis of the leaves.
- Delay in plant growth.
- Loss of vigor.
- Death of young seedlings.
DEVELOPMENT CONDITIONS
Temperature:
15°C - 25°C
Humidity:
60% - 80%
HOW IS IT SPREAD?
Movement of infected soil, crop residues, wind, insect vectors, contaminated agricultural tools, infested plants
HOW TO ELIMINATE IT?
Home treatments
There are no home treatments
Natural allies
There are no natural allies
Chemical treatments
There are no treatments for this disease. Treatments are directed at the insect vectors that transmit it. See insect treatments.
RECOMMENDED PRODUCTS TO ELIMINATE THE PEST
REPELLENT PLANTS
Rosemary, Dill, Coriander
RECOMMENDATIONS
- Check the back of the leaves frequently, especially in dry weather.
- Spray water on the leaves to increase humidity and prevent them from settling.
- Keep plants healthy with good watering and adequate light.
- If you see cobwebs or damage, clean the leaves with a damp cloth or pressurized water.
- Use potassium soap or neem oil every few days until they disappear.
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