Mosca blanca
White Fly
Bemisa Tabaci
Pathogen:
Insect
Type:
Risk to the plant:
HIGH
DESCRIPTION
WHO CAUSES IT?
Bemisia tabaci, commonly known as whitefly, is a hemipteran insect of the Aleyrodidae family. This pathogen goes through several stages in its life: egg, four nymphal stages (nymph I, II, III, IV) and adult. The females deposit their eggs on the underside of the leaves, and they hatch in a period of 5 to 7 days depending on environmental conditions. Nymphs go through four instars before becoming adults. During the first three instars, the nymphs are mobile and look for suitable places to feed, while in the fourth instar they attach to the leaf and go through a pupal phase before becoming adults. Adults are small, approximately 1-2 mm, and white, with wings covered in a powdery wax that gives them their characteristic appearance. Adults can live for several weeks, during which they reproduce prolifically, especially in warm, humid climates.
SYMPTOMS
In radish, whitefly infestation causes several problems that compromise the health and yield of the crop. Nymphs and adults feed on plant sap, which can lead to widespread weakening and the transmission of phytopathogenic viruses. Furthermore, the excretion of honeydew by these insects favors the growth of sooty mold fungi, which cover the leaves and reduce the photosynthetic capacity of the plant.
- Yellowing of the leaves
- Presence of honeydew and sooty mold on the leaves
- General weakening of the plant
- Reduction in the growth and size of the radish
- Transmission of phytopathogenic viruses
- Premature leaf fall
- Malformation of leaves and roots.
TEMPERATURE AND HUMIDITY
20-30°C
60-80%
HOW IS IT SPREAD?
Wind, contact between plants, contaminated agricultural tools, clothing and work equipment
HOW TO REMOVE IT?
Home remedies
There are no home treatments
Chemical treatments
• ORANGE OIL 6% [SL] P/V
• ORANGE OIL 60g/L [ME] P/S
• PARAFFIN OIL (CAS [8042-47-5]) 54.6% [EW] P/V
• AZADIRACTIN 1% (AS AZADIRACTIN A) [EC] P/V
• Azadirachtin 2.6% (AS AZADIRACTIN A) [EC] P/V
• CYPERMETHRIN 5% [EC] P/V
• DELTAMETHRIN 1.5% [EW] P/V
• DELTAMETHRIN 1.57% [SC] P/V
• DELTAMETHRIN 10% [EC] P/V
• DELTAMETHRIN 2.5% [EC] P/V
• DELTAMETHRIN 2.5% [EW] P/V
• LAMBDA CYHALOTHRIN 1.5% [CS] P/V
• LAMBDA CYHALOTHRIN 10% [CS] P/V
• LAMBDA CYHALOTHRIN 2.5% [WG] P/P
• MALTODEXTRIN 47.6% [SL] P/V
• POTASSIUM SALTS OF FATTY ACIDS C14-C20 48% [EW] P/V
• POTASSIUM SALTS OF VEGETABLE FATTY ACIDS 13.04% [SL] P/V
• SPIROTETRAMAT 10% [SC] P/V
• ADHESIVE TRAPS
• CHROMATIC TRAPS
Authorized treatments in organic farming
• ORANGE OIL 6% [SL] P/V
• ORANGE OIL 60g/L [ME] P/S
• PARAFFIN OIL (CAS [8042-47-5]) 54.6% [EW] P/V
• AZADIRACTIN 1% (AS AZADIRACTIN A) [EC] P/V
• Azadirachtin 2.6% (AS AZADIRACTIN A) [EC] P/V
• LAMBDA CYHALOTHRIN 1.5% [CS] P/V
• LAMBDA CYHALOTHRIN 10% [CS] P/V
• LAMBDA CYHALOTHRIN 2.5% [WG] P/P
• MALTODEXTRIN 47.6% [SL] P/V
• POTASSIUM SALTS OF FATTY ACIDS C14-C20 48% [EW] P/V
• POTASSIUM SALTS OF VEGETABLE FATTY ACIDS 13.04% [SL] P/V
• ADHESIVE TRAPS
• CHROMATIC TRAPS
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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- Implement regular monitoring of the crop to detect the presence of whiteflies early.
- Use yellow sticky traps to capture and monitor the adult population.
- Encourage the presence of natural enemies such as ladybugs and parasitoid wasps.
- Apply biological insecticides such as neem oil and potassium soap in a controlled manner.
- Implement crop rotations and avoid continuous planting of susceptible hosts.
- Maintain good hygiene in the field, eliminating plant debris and weeds that may harbor the pest.
- Install anti-insect meshes in greenhouses and protected cultivation structures.
- Avoid excessive use of chemical insecticides that can lead to resistance and eliminate natural enemies.
- Carry out foliar applications with specific products at times of lower activity of natural enemies.
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