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California red scale: what it is, how it originates, and how to eliminate it effectively.
California Red Louse
Aonidiella Aurantii
Pathogen:
Insect
Type:
Risk to the plant:
MILD
DESCRIPTION
WHO CAUSES IT?
The California red louse, scientifically known as Aonidiella aurantii, is a scale insect with a round, dark red body, covered by a waxy protective shell. This pest feeds on plant tissues, piercing the surface to extract sap and causing damage to the health of the plant.
SYMPTOMS
The California red louse can cause problems in citrus by feeding on the leaves, stems and fruits, resulting in discoloration and overall weakening of the plant. Affected citrus may show reduced growth and fruit production.
• Discoloration of leaves, stems and fruits.
• General weakening of the plant.
• Presence of waxy shells on the plant.
• Reduction in growth and fruit production.
• Damaged aesthetic appearance of the fruits.
TEMPERATURE AND HUMIDITY
20°C - 30°C
40% - 80%
HOW IS IT SPREAD?
Direct contact, transport of plant material, wind.
HOW TO REMOVE IT?
Home remedies
There are no home treatments
Chemical treatments
• ORANGE OIL 60g/L [ME] P/S
• PARAFFIN OIL (CAS [64742-46-7]) 80% [EC] P/V
• PARAFFIN OIL (CAS [8042-47-5]) 83% [EC] P/V
• AONIDIELLA AURANTII ATTRACTANT. Diffuser
• PYRIPROXIFEN 10% [EC] P/V
• RESCALURE 4% [PV] P/V
• RESCALURE 5.86% (70 mg s.a./diffuser) [VP] P/P
• POTASSIUM SALTS OF FATTY ACIDS C14-C20 48% [EW] P/V
• SPIROTETRAMAT 15% [OD] P/V
• PARAFFIN OIL (CAS [64742-46-7]) 79% [EC] P/V
• PARAFFIN OIL (CAS [8042-47-5]) 79% [EC] P/V
Authorized treatments in organic farming
• ORANGE OIL 60g/L [ME] P/S
• PARAFFIN OIL (CAS [64742-46-7]) 80% [EC] P/V
• PARAFFIN OIL (CAS [8042-47-5]) 83% [EC] P/V
• AONIDIELLA AURANTII ATTRACTANT. Diffuser
• RESCALURE 4% [PV] P/V
• RESCALURE 5.86% (70 mg s.a./diffuser) [VP] P/P
• POTASSIUM SALTS OF FATTY ACIDS C14-C20 48% [EW] P/V
• PARAFFIN OIL (CAS [64742-46-7]) 79% [EC] P/V
• PARAFFIN OIL (CAS [8042-47-5]) 79% [EC] P/V
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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• Regular inspection of plants to detect early infestations.
• Prune and remove affected parts to reduce spread.
• Use of horticultural oils to control populations.
• Introduction of natural enemies, such as parasitoid wasps.
• Apply specific insecticides if necessary.
Recommendations
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