Remolacha de mesa
How to recognize and combat green leaf spot or gardama in beets
Green Donut Or Gardama
Insect
Type:
Risk to the plant:
HIGH
Spodoptera Exigua
Pathogen:
Orugas o gusanos
WHO CAUSES IT?
Spodoptera exigua, known as the green donut or gardama, is a moth of the family Noctuidae. Adults emerge from the ground in spring and disperse to feed and mate. Females lay their eggs in groups on the surface of beet leaves. The larvae hatch and go through five larval stages, during which they feed voraciously on the leaves and other parts of the plant. In their last stage, the larvae go down to the ground to pupate. The cycle is completed with the emergence of new adult moths that restart the process. The moth is multivoltine, meaning it can have several generations per year, especially in warm climates. Additionally, larvae are known for their ability to move quickly between plants, facilitating dispersal and widespread damage to crops.
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SYMPTOMS
Green donut causes significant damage to beets, mainly attacking the leaves and stems. The larvae pierce and chew the leaves, leaving irregular holes and reducing the photosynthetic capacity of the plant.
- Irregular holes in the leaves
- Severe defoliation in severe infestations
- 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.
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