Escamas
Scale
Coccus Viridis
Pathogen:
Insect
Type:
Risk to the plant:
HIGH
DESCRIPTION
WHO CAUSES IT?
Coccus viridis, known as the green mealybug, is an insect of the Coccidae family. This insect presents a simple metamorphosis that includes the egg, nymph and adult stages. Adult females, which are bright green and oval in shape, lay their eggs on the underside of avocado leaves. After hatching, the nymphs go through several molts while they feed on the plant's sap. Nymphs are flat and light yellow, while adults develop a waxy protective covering. Adult scale insects are sedentary, attaching themselves to leaves and branches as they continue to feed and reproduce.
SYMPTOMS
The green scale insect causes a disease in avocados known as scale. This disease affects the general health of the plant, reducing its vigor and the quality of the fruits. The symptoms of the infestation are visible on the leaves, branches and fruits of the avocado, causing damage that can lead to a significant decrease in production.
- Presence of green scale insects on the underside of the leaves and branches.
- Yellowing and premature leaf fall.
- Reduction in plant growth and vigor.
- Formation of sooty mold (black mold) due to the excretion of honeydew by mealybugs.
- Deterioration of the quality of the fruits.
TEMPERATURE AND HUMIDITY
20°C - 28°C
60% - 80%
HOW IS IT SPREAD?
Movement of infested plants, wind, direct contact between plants, contaminated tools, insect vectors
HOW TO REMOVE IT?
Home remedies
There are no home treatments
Chemical treatments
• RAPE OIL 1.53% [AL] P/V
• RAPE OIL 848.24 g/l [EC] P/V
• ORANGE OIL 60g/L [ME] P/S
• PARAFFIN OIL (CAS [64742-46-7]) 79% [EC] P/V
• PARAFFIN OIL (CAS [64742-46-7]) 80% [EC] P/V
• PARAFFIN OIL (CAS [8042-47-5]) 54.6% [EW] P/V
• PARAFFIN OIL (CAS [8042-47-5]) 79% [EC] P/V
• PARAFFIN OIL (CAS [97862-82-3]) 40% [EW] P/V
• PARAFFIN OIL (CAS [97862-82-3]) 80% [EC] P/V
• Paraffin oil 65.4% [EW] P/V
• PARAFFIN OIL 81.7% [EC] P/V
• PARAFFIN OIL 83% [EC] P/V
• ACETAMIPRID 20% [SG] P/P
• AZADIRACTIN 1% (AS AZADIRACTIN A) [EC] P/V
• Azadirachtin 2.6% (AS AZADIRACTIN A) [EC] P/V
• DELTAMETHRIN 2.5% [EC] P/V
• MALTODEXTRIN 47.6% [SL] P/V
• PYRIPROXIFEN 10% [EC] P/V
• POTASSIUM SALTS OF FATTY ACIDS C14-C20 48% [EW] P/V
Authorized treatments in organic farming
• RAPE OIL 1.53% [AL] P/V
• RAPE OIL 848.24 g/l [EC] P/V
• ORANGE OIL 60g/L [ME] P/S
• PARAFFIN OIL (CAS [64742-46-7]) 79% [EC] P/V
• PARAFFIN OIL (CAS [64742-46-7]) 80% [EC] P/V
• PARAFFIN OIL (CAS [8042-47-5]) 54.6% [EW] P/V
• PARAFFIN OIL (CAS [8042-47-5]) 79% [EC] P/V
• PARAFFIN OIL (CAS [97862-82-3]) 40% [EW] P/V
• PARAFFIN OIL (CAS [97862-82-3]) 80% [EC] P/V
• Paraffin oil 65.4% [EW] P/V
• PARAFFIN OIL 81.7% [EC] P/V
• PARAFFIN OIL 83% [EC] P/V
• AZADIRACTIN 1% (AS AZADIRACTIN A) [EC] P/V
• Azadirachtin 2.6% (AS AZADIRACTIN A) [EC] P/V
• MALTODEXTRIN 47.6% [SL] P/V
• POTASSIUM SALTS OF FATTY ACIDS C14-C20 48% [EW] 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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- Carry out regular inspections on avocado crops to detect the presence of mealybugs early.
- Use horticultural oils or insecticidal soaps to suffocate mealybugs and their eggs.
- Introduce natural enemies such as ladybugs and parasitoid wasps that feed on mealybugs.
- Prune and destroy infested plant parts to reduce the scale insect population.
- Maintain adequate fertilization and irrigation to strengthen plants and make them less susceptible to pests.
- Implement physical barriers or sticky traps around the crop to prevent spread.
- Apply specific chemical treatments in a controlled manner, avoiding excessive use that could lead to the development of resistance.
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