Horticultural Anti-Thrips: Complete Application Guide for Anti-Thrips Formula on Shallots, Chili Peppers, and Tomatoes

Thrips (Thrips spp.) are major pests on horticultural crops such as shallots, chili peppers, and tomatoes. Thrips attacks not only cause direct damage like silver streaks and curled leaves but also transmit viruses such as TSWV (Tomato Spotted Wilt Virus) which can be lethal. Chemical pesticide control often fails due to resistance and negative impacts on natural enemies. Horticultural anti-thrips based on biological agents offer a sustainable solution. Biosolution presents the Horticultural Anti-Thrips Formula containing Beauveria bassiana thrips strain, a specific entomopathogen effective against adult thrips, nymphs, and eggs. This article will technically discuss the correct application method: dosage, timing, frequency, and adjuvant combinations for maximum control.

Why is the Horticultural Anti-Thrips Formula Effective for Shallots, Chili Peppers, and Tomatoes?

The Horticultural Anti-Thrips Formula is specifically designed to address thrips problems in intensive horticultural crops. Shallots, chili peppers, and tomatoes have dense canopy characteristics and growing points favored by thrips. The Beauveria bassiana thrips strain in this formula has a unique mechanism of action: spores attach to the thrips cuticle, germinate, penetrate the host body, and produce toxins that kill within 3-5 days. The advantages of this strain include high virulence against thrips, tolerance to field temperatures, and compatibility with common adjuvants.

Advantages over chemical pesticides

Chemical pesticides often cause thrips resistance, kill beneficial insects, and leave residues. In contrast, the Horticultural Anti-Thrips Formula is selective, safe for pollinators and natural enemies, and leaves no harmful residues. This product is also registered with the Ministry of Agriculture and suitable for organic farming.

Dosage and Application Method of Horticultural Anti-Thrips Formula

Precise dosage: 3 ml per liter of water

The recommended dosage is 3 ml of Horticultural Anti-Thrips Formula per liter of water. For a 14-liter spray tank, use 42 ml of product. Ensure clean water (pH 6-7) with low chlorine content. Stir the solution until homogeneous before application.

Spray method: Thorough spraying including growing points

Thrips often hide in leaf folds, young shoots, and flowers. Therefore, spray the solution evenly over all plant parts, especially growing points, lower leaf surfaces, and flower buds. Use a spray nozzle that produces fine droplets (200-300 microns) for maximum coverage. Spray pressure around 2-3 bar.

Proper Application Timing for Horticultural Anti-Thrips

Afternoon, RH > 75%

Beauveria bassiana requires high humidity for spore germination. Therefore, the best application time is in the afternoon (3:00-5:00 PM) when relative humidity (RH) is above 75%. Avoid application during rain or strong wind. If RH is low, spray clean water first to increase micro-humidity.

Application frequency: every 5-7 days

For high thrips populations, apply every 5-7 days for 3-4 consecutive weeks. Under mild conditions, 2-3 applications at 7-day intervals are sufficient. Conduct regular monitoring using yellow traps or white paper to track thrips populations.

Adjuvant Combinations to Enhance Effectiveness

Sticker-spreader adjuvant

To improve adhesion and spread of the solution on waxy leaf surfaces (such as shallots and chili peppers), add a non-ionic adjuvant like ethoxylated alcohol (0.1-0.2 ml/l) or silicone surfactant (0.05 ml/l). Adjuvants help spores adhere better and more evenly.

UV protectant adjuvant

Beauveria bassiana is sensitive to UV light. If application must be done during the day, add a UV protectant such as lignin extract or titanium dioxide (0.5 g/l). However, afternoon application is still highly recommended to avoid UV degradation.

Avoid mixing with chemical fungicides

Do not mix the Horticultural Anti-Thrips Formula with chemical fungicides containing active ingredients like copper, sulfur, or triazoles, as they can inhibit entomopathogenic fungal growth. If fungicide application is necessary, allow at least 3 days between applications.

Case Studies: Application on Shallots, Chili Peppers, and Tomatoes

Shallots

In shallot plantations in Brebes, application of Horticultural Anti-Thrips Formula at 3 ml/l every 5 days for 3 weeks suppressed thrips populations by up to 80% and significantly reduced silver leaf symptoms. Productivity increased by 15% compared to chemical control plots.

Chili peppers

In chili pepper centers in East Java, combination with sticker adjuvant applied in the afternoon resulted in 70% thrips suppression and reduced yellow virus (TSWV) incidence by up to 50%. Plants were healthier with good quality fruit.

Tomatoes

On tomatoes, application focused on shoot tips and flowers. Test results in highlands showed 75% thrips control within 2 weeks, and tomato fruits were free from thrips-induced necrosis.

Storage and Safety of Anti-Thrips Formula

Storage

Store the Horticultural Anti-Thrips Formula in a cool place (4-10°C) away from direct sunlight. Do not freeze. The product in tightly sealed packaging can last up to 12 months. Once the solution is prepared, use within 6 hours to maintain spore viability.

Safety

This product is safe for humans, animals, and the environment. However, always use personal protective equipment (PPE) such as masks and gloves during application. If skin contact occurs, wash with soap and water. Do not ingest. Dispose of leftover solution in a safe place.

Conclusion

Biosolution's Horticultural Anti-Thrips Formula is an effective, environmentally friendly, and economical horticultural anti-thrips solution. With a dosage of 3 ml/l, afternoon application when RH >75%, and addition of sticker adjuvant, thrips control on shallots, chili peppers, and tomatoes can be optimal. This product also suppresses thrips-borne viruses and reduces leaf necrosis, thereby improving harvest quality. For best results, apply regularly and monitor thrips populations. Get this product and consult your needs with the Biosolution team via WhatsApp.

FAQ

What is the dosage of Horticultural Anti-Thrips Formula for a 14-liter spray tank?

The recommended dosage is 3 ml per liter of water. For a 14-liter tank, use 42 ml of product. Stir until homogeneous and apply immediately. Ensure the water used is clean and pH neutral.

Is the Horticultural Anti-Thrips Formula safe to mix with foliar fertilizers?

Generally, this product is compatible with organic and inorganic foliar fertilizers. However, avoid mixing with fertilizers containing heavy metals or high alkaline compounds. Conduct a small-scale compatibility test before widespread application.

When is the best application time to keep spores active?

The best time is in the afternoon (3:00-5:00 PM) when relative humidity is above 75%. Ideal temperature is 25-30°C. Avoid application during intense sunlight or heavy rain as it can reduce spore viability.

How long does it take to see the effect of the Horticultural Anti-Thrips Formula?

Thrips mortality begins to be seen 3-5 days after application. The population will significantly decrease after 2-3 applications at 5-7 day intervals. Under heavy infestation, more frequent applications may be needed.

Can this product be used for other horticultural crops besides shallots, chili peppers, and tomatoes?

Yes, the Horticultural Anti-Thrips Formula is also effective for other crops attacked by thrips such as melons, watermelons, potatoes, and strawberries. Dosage and application method are the same, adjust to field conditions.