Cochinillas
Mealybugs
Mealybugs
Pathogen:
Insect
Type:
Risk to the plant:
HIGH
DESCRIPTION
WHO CAUSES IT?
Mealybugs are a group of insects belonging to the superfamily Coccoidea, which includes various species that affect a wide variety of plants. Mealybugs have a complex biology and go through several stages of development, beginning as eggs laid by females in or on the host plant. Nymphs, known as "crawlers", emerge from the eggs and are mobile and disperse to find suitable places on the plant to feed. After attaching to the plant, the nymphs go through several molts, growing and developing through several instars. Adult females are usually sessile and covered by a protective shell, while males, which are less common, can be winged and mobile. The complete development cycle can vary depending on the species and environmental conditions, with some species capable of producing multiple generations in a single year.
SYMPTOMS
The disease known as mealybugs affects blackberries, causing a series of problems that compromise the health and productivity of the plant. Mealybugs feed on the sap of the plant, weakening it and reducing its vigor. Additionally, they excrete honeydew, a sticky substance that promotes the growth of sooty mold fungi, which further reduces the photosynthetic capacity of the plant and affects the quality of the fruits.
- Presence of white or cottony Taches on branches and leaves.
- Yellowish and weakened leaves.
- Deformations in shoots and fruits.
- Premature fall of leaves and fruits.
- Appearance of black mold (sooty mold) on the excreted molasses.
- Delayed growth and decreased plant performance.
TEMPERATURE AND HUMIDITY
20°C a 28°C
50% a 70%
HOW IS IT SPREAD?
Wind, Infested plants, Contaminated tools, Transport of plants and fruits, Field personnel
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 [8042-47-5]) 54.6% [EW] P/V
• 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
• MALTODEXTRIN 47.6% [SL] 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 [8042-47-5]) 54.6% [EW] P/V
• 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
• 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 of the crop to detect the presence of mealybugs early.
- Use horticultural oils and insecticidal soaps that can suffocate mealybugs.
- Promote biological control through the introduction of natural enemies such as parasitoid wasps and ladybugs.
- Prune and destroy infested parts of the plant to reduce the scale insect population.
- Avoid excess nitrogen fertilization, which can favor the development of mealybugs.
- Implement physical barriers or sticky traps to intercept mobile nymphs.
- Apply systemic insecticides in case of severe infestations, following integrated pest management (IPM) recommendations.
- Maintain good garden hygiene, eliminating plant debris and weeds that may serve as shelter.
Recommendations
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