Black Donut Or Prodenia
WHAT IT IS AND HOW TO ELIMINATE
Remolacha de mesa
Black Donut Or Prodenia
Spodoptera Littoralis
Pathogen:
Insect
Type:
Risk to the plant:
HIGH
Orugas o gusanos
WHO CAUSES IT?
Spodoptera littoralis, known as the black donut or prodenia, is a moth of the Noctuidae family that affects numerous crops, including beets. Adult females deposit their eggs in clusters on the surface of leaves. The larvae emerge and go through six larval stages, during which they feed voraciously on foliage, causing significant damage. In their last stage, the larvae descend to the ground to pupate. The pupa remains in the soil for a period before the adults emerge, completing the cycle. Spodoptera littoralis can have multiple generations per year, especially in warm climates, allowing it to maintain high populations and cause continuous damage throughout the growing season. The mobility of larvae and the ability of adult moths to fly long distances facilitate dispersal and establishment in new areas.
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SYMPTOMS
Black donut causes serious damage to beets, mainly to the leaves and stems, compromising plant health and yield. The larvae feed on the leaves, causing defoliation and general weakening of the plant.
- Leaves with irregular perforations
- Severe defoliation
- Bitten and weakened stems
- Delay in plant growth
- Death of young seedlings
DEVELOPMENT CONDITIONS
Temperature:
20°C - 30°C
Humidity:
60% - 80%
HOW IS IT SPREAD?
Soil movements, Infested plants, Contaminated agricultural machinery, Wind, Transport of agricultural products
HOW TO ELIMINATE IT?
Home treatments
There are no home treatments
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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