Anti Thrips Horticulture: 5 Powerful Formulas for Onions, Chilies, Tomatoes

Thrips attacks on horticultural crops such as shallots, chilies, and tomatoes are often a nightmare for farmers. These tiny pests not only damage leaf and fruit tissue but also act as vectors for deadly viruses. The good news is that anti-thrips horticulture technology based on biological agents has been proven to suppress thrips populations by up to 80% without leaving chemical residues. This article thoroughly discusses 5 flagship formulas that have been field-tested, including the role of Beauveria bassiana specific thrips strain as the main weapon.

Why Are Thrips Difficult to Control?

Thrips (Thrips spp.) are small insects measuring 1–2 mm with a fast life cycle and high reproductive capacity. In one growing season, thrips can produce 8–12 generations. Additionally, thrips have a behavior of hiding in growing points, leaf folds, and flower petals, making chemical pesticide applications often ineffective. Resistance to chemical insecticides is also increasingly reported. This is why a biological approach is a non-negotiable solution.

5 Anti-Thrips Horticulture Formulas Based on Beauveria bassiana

1. Standard Formula: Beauveria bassiana Thrips Strain

This formula is Biosolution's mainstay. It contains Beauveria bassiana strain specifically isolated from thrips, thus having high virulence against the target pest. Mechanism: fungal conidia attach to the thrips cuticle, then germinate and penetrate the host's body. Within 3–5 days, thrips die and their bodies become a source of new conidia spread. Application dose: 3 ml per liter of water, sprayed evenly every 5–7 days in the afternoon when RH > 75%.

2. Combination Formula with Garlic Extract

Garlic extract (allicin) is repellent and antimicrobial. When combined with B. bassiana, thrips are exposed more quickly because the repellent nature forces thrips to move actively, resulting in more contact with conidia. Mix 3 ml of standard formula + 2 ml of garlic extract per liter of water. Tests on chili crops showed a reduction in thrips population of up to 85% within 2 weeks.

3. Formula with Natural Surfactant (Lecithin)

Thrips often hide behind the waxy layer of leaves. Lecithin (from soy) acts as a spreader and sticker, helping conidia adhere better to leaf surfaces and thrips bodies. Add 0.5 ml of lecithin per liter of solution. This combination is very effective for onion plants with smooth and upright leaves.

4. Slow Release Formula with Zeolite

For large areas or drip irrigation, zeolite can be used as a conidia carrier. Zeolite absorbs B. bassiana conidia and releases them gradually over 7–10 days. Mix 10 grams of conidia-impregnated zeolite per liter of water, then spray. This method reduces application frequency to once a week without losing efficacy.

5. Formula for Thrips-Transmitted Virus Control

Thrips are known vectors of Tomato spotted wilt virus (TSWV) and Iris yellow spot virus (IYSV) in onions. The anti-thrips horticulture formula with B. bassiana not only kills thrips but also reduces vector populations, drastically lowering virus infection. In Biosolution partner tomato plantations, this formula reduced TSWV incidence from 40% to 8% in one growing season.

Case Study: Onion Plantation in Brebes

Shallot farmers in Brebes, Central Java, experienced severe thrips attacks causing yellowing leaves and stunted growth. Before using the anti-thrips horticulture formula, they relied on chemical insecticides costing IDR 800,000 per season per hectare, yet thrips remained resistant. After switching to the standard B. bassiana formula (3 ml/L, spray every 5 days), thrips population dropped 80% within 3 weeks. Application cost was only IDR 200,000 per season. Harvest increased by 30% due to healthier plants.

Proper Application Method

The success of anti-thrips horticulture formulas greatly depends on application technique. Here is a practical guide:

• Spray in the afternoon (3:00–5:00 PM) when humidity is high.
• Direct the nozzle to growing points and leaf folds where thrips hide.
• Ensure the solution covers the entire plant surface until evenly wet.
• Do not mix with systemic chemical fungicides as they can inhibit conidia germination.
• Use clean water (pH 6–7) and do not let the solution sit for more than 2 hours.

Advantages of Biosolution Anti-Thrips Horticulture Formula

The Anti-Thrips Horticulture Formula product from Biosolution is specifically designed for horticultural farmers. Its advantages:

• Safe for organic: Leaves no harmful residues.
• Selective: Only kills thrips and target insects, does not disturb natural enemies.
• No resistance: Multi-target mechanism (fungal infection) makes thrips difficult to adapt.
• Cost-effective: Low dosage and less frequent application compared to chemicals.

Integration with Other Controls

For optimal results, anti-thrips horticulture formulas should be integrated with healthy cultivation practices:

• Install silver plastic mulch to reflect light and repel thrips.
• Use yellow sticky traps to monitor populations.
• Plant refugia crops (e.g., cosmos) as natural enemy habitats.
• Rotate crops with non-thrips hosts (e.g., rice or corn).

Conclusion

Thrips control on onions, chilies, and tomatoes no longer depends on chemical pesticides. The five anti-thrips horticulture formulas based on Beauveria bassiana described above offer effective, environmentally friendly, and economical solutions. With proper application, reducing thrips populations by up to 80% is not a dream. If you want to try these formulas, feel free to consult with Biosolution expert team or see the complete product on the product page.

FAQ

1. Is this anti-thrips formula safe for horticultural crops?

Yes, this formula is safe because it uses the biological agent Beauveria bassiana which is not phytotoxic. In fact, some farmers report greener and more vigorous plants after application. Follow the recommended dosage (3 ml/L) and avoid application when temperature >35°C.

2. How long does it take to see results?

B. bassiana conidia begin infecting thrips within 24–48 hours. Mass death is usually visible on day 5 after application. For significant population suppression (80%), 2–3 consecutive applications at 5–7 day intervals are needed.

3. Can this formula be mixed with chemical pesticides?

Not recommended, especially with systemic chemical fungicides that are fungistatic. If necessary, use selective insecticides that do not harm entomopathogenic fungi. Consult with Biosolution technicians first.

4. Is this formula effective for all types of thrips?

Beauveria bassiana thrips strain has a broad spectrum against thrips, including Thrips parvispinus, Thrips tabaci, and Frankliniella occidentalis. However, best efficacy is obtained on thrips active on leaf surfaces. For thrips hiding in soil, application should also cover the stem base.

5. How to store the mixed formula?

The mixed solution should be used within 2 hours. If leftover, store in a cool, dark place and use within a maximum of 6 hours after mixing. Do not store the solution for more than a day as conidia will lose viability.