Cochinillas
WHAT IS AND HOW TO ELIMINATE
Mealybugs
Mealybugs
Pathogen:
Insect
Type:
Risk to the plant:
HIGH
DESCRIPTION
WHO CAUSES IT?
Mealybugs are insects belonging to several species within the superfamily Coccoidea. They are pests that affect a wide range of plants. Mealybug life cycles vary depending on the species, but generally include the following stages: egg, nymph, and adult. Females usually deposit eggs in protective masses or sacs on the surface of plants or in cracks in the bark. After hatching, the nymphs (known as "crawlers") are mobile and look for suitable places to feed. As they feed, the nymphs develop a waxy exoskeleton that provides protection. Once mature, females generally remain motionless, while males, if present, can be winged and move to mate. Mealybugs feed on plant sap, inserting their sucking mouthparts into plant tissues, allowing them to extract nutrients and weaken the plant.
SYMPTOMS
Mealybug infestation on plants can lead to a number of problems that affect the health and vigor of the plants. These insects feed on the sap, which can cause general weakening, water stress and reduced growth. Additionally, mealybugs excrete a sugary substance called honeydew, which promotes the growth of sooty fungi, darkening the leaves and reducing photosynthesis. Symptoms include:
- Presence of small insects with a waxy covering on stems, leaves and fruits.
- Yellowish or chlorotic leaves.
- Premature fall of leaves and fruits.
- Reduction in plant growth and vigor.
- Appearance of sooty fungi on the affected parts.
TEMPERATURE AND HUMIDITY
20°C - 30°C
60% - 80%
HOW IS IT SPREAD?
Movement of infected plants, wind, direct contact between plants, contaminated tools, transport of substrate or infested soil
HOW TO REMOVE IT?
Home remedies
There are no home treatments
Chemical treatments
• ABAMECTIN 0.0015% + PYRETHRINS 0.02% [AL] P/V
• RAPESEAL OIL 0.825% + PYRETHRINS 0.018% [AL] P/V
• RAPE OIL 1.53% [AL] P/V
• RAPE OIL 1.69% ( ) [AL] P/V
• RAPE OIL 77.7% [EC] P/V
• RAPE OIL 848.24 g/l [EC] P/V
• ORANGE OIL 60g/L [ME] P/S
• PARAFFIN OIL (CAS [97862-82-3]) 40% [EW] P/V
• PARAFFIN OIL (CAS [97862-82-3]) 80% [EC] P/V
• ACETAMIPRID 0.005% [AL] P/V
• ACETAMIPRID 20% [SG] P/P
• ACETAMIPRID 20% [SP] P/P
• AZADIRACTIN 1% (AS AZADIRACTIN A) [EC] P/V
• Azadirachtin 2.6% (AS AZADIRACTIN A) [EC] P/V
• CYPERMETHRIN 5% [EC] P/V
• CYPERMETHRIN 50% [EC] P/V
• DELTAMETHRIN 1.57% [SC] P/V
• DELTAMETHRIN 2.5% [EC] P/V
• FLUPIRADIFURONE 0.008% [AL] P/V
• LAMBDA CYHALOTHRIN 5% [EG] P/P
• PYRIPROXIFEN 10% [EC] P/V
• POTASSIUM SALTS OF UNSATURATED FATTY ACIDS C7-C18 & C18 (CAS [67701-09-1] 515g/L [SL] P/V
• POTASSIUM SALTS OF UNSATURATED FATTY ACIDS C7-C18 & C18 10.2g/L [AL] P/V
• POTASSIUM SALTS OF FATTY ACIDS C14-C20 48% [EW] P/V
• POTASSIUM SALTS OF VEGETABLE FATTY ACIDS 13.04% [SL] P/V
• SPIROMESIFEN 24% [SC] P/V
• TAU-FLUVALINATE 24% [EW] P/V
Authorized treatments in organic farming
• RAPESEAL OIL 0.825% + PYRETHRINS 0.018% [AL] P/V
• RAPE OIL 1.53% [AL] P/V
• RAPE OIL 1.69% ( ) [AL] P/V
• RAPE OIL 77.7% [EC] P/V
• RAPE OIL 848.24 g/l [EC] P/V
• ORANGE OIL 60g/L [ME] P/S
• PARAFFIN OIL (CAS [97862-82-3]) 40% [EW] P/V
• PARAFFIN OIL (CAS [97862-82-3]) 80% [EC] P/V
• AZADIRACTIN 1% (AS AZADIRACTIN A) [EC] P/V
• Azadirachtin 2.6% (AS AZADIRACTIN A) [EC] P/V
• LAMBDA CYHALOTHRIN 5% [EG] P/P
• POTASSIUM SALTS OF UNSATURATED FATTY ACIDS C7-C18 & C18 (CAS [67701-09-1] 515g/L [SL] P/V
• POTASSIUM SALTS OF UNSATURATED FATTY ACIDS C7-C18 & C18 10.2g/L [AL] P/V
• POTASSIUM SALTS OF FATTY ACIDS C14-C20 48% [EW] P/V
• POTASSIUM SALTS OF VEGETABLE FATTY ACIDS 13.04% [SL] P/V
Insect allies
EFFECTIVE PRODUCTS TO ELIMINATE THIS PEST
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Effective against all types of fungi
- Carry out regular inspections of the plants to detect the presence of mealybugs early.
- Apply horticultural oils during the mobile nymph stage to improve control effectiveness.
- Introduce or encourage natural enemies, such as parasitoids and specific predators of scale insects.
- Use potassium soap or biological insecticides such as neem oil to control nymphs and adults.
- Keep plants healthy and stress-free through proper irrigation and fertilization.
- Prune and eliminate plant parts that have severe infestations to reduce the spread.
- Avoid excessive use of nitrogen fertilizers that can promote the growth of scale insects.
- Implement physical barriers or sticky traps to capture mobile nymphs.
- Rotate the use of insecticides with different modes of action to avoid resistance.
- Train agricultural workers in the identification and management of scale insects.
Recommendations
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