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Thrips

Pathogen:

Insect

Type:

Risk:

HIGH

DESCRIPTION

Pathogen description

Thrips are small insects belonging to the order Thysanoptera, with several species that affect peach, peach or nectarine. These insects go through several stages of development: egg, larva, pupa and adult. Females lay eggs in plant tissue, usually on leaves, shoots or flowers. After a few days, the eggs hatch and the larvae begin to feed on plant tissues, causing direct damage. The larvae develop in two stages before moving to the pupal stage, which can occur in the soil or on the bark of trees. Finally, the adults emerge and restart the cycle. Adults are small, slender and have fringed wings, allowing them to move easily between plants. The life of a thrips can be completed in a few weeks, allowing for multiple generations per year, especially in warm climates.

Disease description

In peach, peach or nectarine, thrips cause a disease characterized by both direct and indirect damage to the plant. Direct damage includes larvae and adults feeding on leaves, shoots and fruits, while indirect damage results from the transmission of viruses and other pathogens. Thrips feeding causes silvery or discolored Taches on leaves and fruits, which affects appearance and commercial quality. In addition, thrips can induce deformations in shoots and leaves, and in severe cases, cause premature drop of flowers and fruits. Symptoms include:
- Silvery or discolored Taches on the leaves and fruits.
- Deformations in shoots and leaves.
- Premature fall of flowers and fruits.
- Reduction in plant growth.
- Presence of small scars or calluses on the surface of the fruits.
- Signs of viruses transmitted by thrips, such as leaf mottling.

TEMPERATURE AND HUMIDITY

20°C - 30°C

60% - 80%

VOIES DE TRANSMISSION

Wind, contaminated tools, infected plant material, vector insects

Chemical treatments

CONTROL

• RAPE OIL 1.53% [AL] P/V
• RAPE OIL 848.24 g/l [EC] P/V
• ORANGE OIL 6% [SL] 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
• AZADIRACTIN 1% (AS AZADIRACTIN A) [EC] P/V
• Azadirachtin 2.6% (AS AZADIRACTIN A) [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
• FORMETANATE 50% [SP] P/P
• LAMBDA CYHALOTHRIN 1.5% [CS] P/V
• LAMBDA CYHALOTHRIN 10% [CS] P/V
• LAMBDA CYHALOTHRIN 5% [EG] P/P
• PYRETHRINS 4.65% (as pyrethrum extract) [EC] P/V
• PYRETHRINS 4% (PYRETHHRINE EXTR.) [EC] P/V
• POTASSIUM SALTS OF FATTY ACIDS C14-C20 48% [EW] P/V
• SPINETORAM 25% [WG] P/P
• SPINOSAD 48% [SC] P/V
• SPIROTETRAMAT 10% [SC] P/V
• TAU-FLUVALINATE 24% [EW] P/V
• ADHESIVE TRAP
• CHROMATIC TRAP

Treatments authorized in organic farming

• RAPE OIL 1.53% [AL] P/V
• RAPE OIL 848.24 g/l [EC] P/V
• ORANGE OIL 6% [SL] 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
• 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 5% [EG] P/P
• PYRETHRINS 4.65% (as pyrethrum extract) [EC] P/V
• PYRETHRINS 4% (PYRETHHRINE EXTR.) [EC] P/V
• POTASSIUM SALTS OF FATTY ACIDS C14-C20 48% [EW] P/V
• SPINOSAD 48% [SC] P/V
• ADHESIVE TRAP
• CHROMATIC TRAP

Biological control

• AMBLYDROMALUS LIMONICUS (Parasitoid and predatory mites)
• AMBLYSEIUS SWIRSKII (Parasitoid and predatory mites)
• BEAUVERIA BASSIANA (STRAIN ATCC 74040) 2.3% (2.3X10E7 VIABLE SPORES/ML) [OD] P/V
• BEAUVERIA BASSIANA (GHA STRAIN) 22% (4.4 x 10E10 CONIDIAS/G) [WP] P/P
• BEAUVERIA BASSIANA strain PPRI 5339 8% (8 X 10E12 CFU/L) [OD] P/P
• CHRYSOPERLA CARNEA (Parasitoid and predatory insects)
• HETERORHABDITIS BACTERIOPHORA (Parasitoid and predatory nematodes)
• MACROCHELES ROBUSTULUS (Parasitoid and predatory mites)
• MACROLOPHUS PYGMAEUS (Parasitoid and predatory insects)
• METARHIZIUM BRUNNEUM strain Ma 43 10.5% [OD] P/V
• NEOSEIULUS CUCUMERIS (Parasitoid and predatory mites)
• ORIUS LAEVIGATUS (Parasitoid and predatory insects)
• PAECILOMYCES FUMOSOROSEUS (STRAIN FE 9901) 18% (2 X 10 E9 CFU/G) [WP] P/P
• STEINERNEMA FELTIAE (Parasitoid and predatory nematodes)
• TRANSEIUS MONTDORIENSIS (Parasitoid and predatory mites)

Preventive treatments

• BEAUVERIA BASSIANA (STRAIN ATCC 74040) 2.3% (2.3X10E7 VIABLE SPORES/ML) [OD] P/V
• BEAUVERIA BASSIANA (GHA STRAIN) 22% (4.4 x 10E10 CONIDIAS/G) [WP] P/P
• BEAUVERIA BASSIANA strain PPRI 5339 8% (8 X 10E12 CFU/L) [OD] P/P
• ADHESIVE TRAP
• CHROMATIC TRAP

- Use yellow sticky traps to monitor and reduce the thrips population.
- Implement crop rotation to interrupt the life cycle of thrips.
- Maintain adequate garden hygiene, eliminating plant remains and fallen fruits.
- Apply specific insecticide treatments according to established recommendations and damage thresholds.
- Promote the presence of natural enemies of thrips, such as predatory mites and lacewings.
- Avoid excessive use of broad-spectrum insecticides that can harm natural enemies.
- Carry out pruning and clearing to improve aeration and reduce humidity in the foliage.
- Use vegetable covers or mulch to make pupation in the soil difficult.
- Regularly monitor crops to detect and treat early infestations.

Recommendations

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*The recommended treatments are recommendations based on the authorities' databases and do not replace in any way the guidelines established by the legislation of each country.