Trips
Thrips
Thrips
Pathogen:
Insect
Type:
Risk to the plant:
INTERMEDIATE
DESCRIPTION
WHO CAUSES IT?
Frankliniella occidentalis, commonly known as thrips, is a tiny insect that belongs to the order Thysanoptera. This insect is highly polyphagous, affecting a wide variety of plants, including pome fruit trees. Adults are approximately 1-2 mm and yellow to brown in color. The female lays her eggs within the plant tissue, which provides protection to the offspring. The larvae emerge and go through several nymphal stages before becoming adults. During these phases, thrips feed on plant cells, using their scraping and sucking mouthparts to extract cellular contents, causing significant damage to plant tissues. Reproduction is rapid and can produce several generations per year, especially under favorable temperature and humidity conditions. The ability to disperse through flight and wind facilitates the spread of the pathogen to new areas.
SYMPTOMS
Thrips cause significant disease in pome fruit trees, manifesting through direct and indirect damage to the plants. Direct damage includes the destruction of plant cells, leading to the appearance of Taches and scars on fruits, leaves and flowers. Indirect damage occurs due to the transmission of viruses and other pathogens that thrips can carry.
- Silvery or whitish Taches on the leaves and fruits.
- Deformation and scarring of the fruits.
- Premature fall of flowers and fruits.
- Delay in plant growth.
- Presence of black excrement in the affected areas.
- Transmission of viruses that cause additional diseases.
TEMPERATURE AND HUMIDITY
20°C - 30°C
60% - 80%
HOW IS IT SPREAD?
Wind, contaminated tools, infected plants, direct contact with leaves and fruits, movements of people and machinery, irrigation water
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 [8042-47-5]) 54.6% [EW] P/V
• CYPERMETHRIN 10% [EC] P/V
• DELTAMETHRIN 2.5% [EC] P/V
• LAMBDA CYHALOTHRIN 1.5% [CS] P/V
• LAMBDA CYHALOTHRIN 10% [CS] P/V
• PYRETHRINS 4.65% (as pyrethrum extract) [EC] P/V
• POTASSIUM SALTS OF FATTY ACIDS C14-C20 48% [EW] P/V
• SPINETORAM 25% [WG] P/P
• TAU-FLUVALINATE 24% [EW] P/V
• ADHESIVE TRAP
• CHROMATIC TRAP
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 [8042-47-5]) 54.6% [EW] P/V
• LAMBDA CYHALOTHRIN 1.5% [CS] P/V
• LAMBDA CYHALOTHRIN 10% [CS] P/V
• PYRETHRINS 4.65% (as pyrethrum extract) [EC] P/V
• POTASSIUM SALTS OF FATTY ACIDS C14-C20 48% [EW] P/V
• ADHESIVE TRAP
• CHROMATIC TRAP
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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- Regularly monitor crops to detect the presence of thrips using sticky traps and visual checks.
- Implement physical barriers such as anti-insect mesh to prevent the entry of thrips.
- Use biological control with natural enemies such as predatory mites and parasitoid wasps.
- Apply specific insecticides following technical recommendations and avoiding repeated use to prevent resistance.
- Maintain good crop hygiene, eliminating plant debris and weeds that can serve as a refuge for thrips.
- Regulate irrigation and fertilization to keep plants vigorous and less susceptible to infestations.
- Rotate crops to interrupt the life cycle of thrips and reduce infestation pressure.
- Introduce trap plants to attract and concentrate thrips in specific areas, facilitating their control.
- Carry out appropriate pruning to improve air circulation and reduce humidity in the foliage.
- Avoid transporting infected plants to non-infested areas to prevent spread.
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