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Sooty Mealybug Or Black Cochineal
Saissetia Oleae
Pathogen:
Insect
Type:
Risk:
INTERMEDIATE
Cochinillas
WHO CAUSES IT?
Saissetia oleae, commonly known as the sooty mealybug, is a species of scale insect that affects olive trees. These insects feed on plant sap, causing weakening and stress to the trees. Additionally, they produce a sticky substance called honeydew, which serves as a growth medium for the sooty mold fungus. Sooty mealybug reproduction can be sexual or asexual, and females can lay up to 500 eggs in a single season.
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SYMPTOMS
The disease that occurs in olive trees is characterized by the presence of honeydew on the branches and leaves, which gives rise to the formation of a layer of black fungus known as sooty mold. This affects the plant's photosynthesis, as the sooty layer blocks sunlight.
• Presence of honeydew on branches and leaves.
• Formation of a layer of soot on the molasses.
• Loss of vigor in the plant.
• Decrease in the quality and quantity of the olive harvest.
• Branches and leaves weakened and yellowed.
TEMPERATURE AND HUMIDITY
20°C - 30°C
50% - 70%
TRANSMISSION PATHS
Insect movements, contact with infected plants, contaminated pruning tools.
TREATMENTS
Chemical treatment
• PARAFFIN OIL (CAS [8042-47-5]) 54.6% [EW] P/V
• DELTAMETHRIN 1.57% [SC] P/V
• DELTAMETHRIN 2.5% [EC] P/V
• PYRIPROXIFEN 10% [EC] P/V
• POTASSIUM SALTS OF FATTY ACIDS C14-C20 48% [EW] P/V
Authorized treatments in organic farming
• PARAFFIN OIL (CAS [8042-47-5]) 54.6% [EW] P/V
• POTASSIUM SALTS OF FATTY ACIDS C14-C20 48% [EW] P/V
Traitements biologiques
-
Recommendations
• Regularly monitor olive trees for the presence of scale insects and sooty mold.
• Control insect populations to prevent honeydew production.
• Apply specific insecticides to control the sooty scale.
• Remove affected plant parts to reduce spread.
• Encourage the presence of natural predators such as ladybugs and parasitic wasps.
• Avoid excessive watering, especially at the top of the olive trees.
• Disinfect pruning and harvesting tools to avoid transmission.
TREATMENTS
Homemade 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.
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.
REPELLENT PLANTS
Rosemary, Dill, Coriander
RECOMMENDED PRODUCTS
*The recommended treatments are still recommendations according to the databases of the authorities and at no time do they replace the guidelines established according to the legislation of each country
*The products shown are recommendations and are not our own products. As Amazon Associates, we earn revenue from purchases of recommended products.
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