Dinotefuran + Buprofezin Combo Against Brown Planthopper on Rice: A Comprehensive Solution for Modern Agriculture

Dinotefuran + Buprofezin Combo Against Brown Planthopper on Rice

1. Overview of Brown Planthopper on Rice

The brown planthopper (Nilaparvata lugens) is one of the most destructive pests in Vietnamese rice cultivation. Its rapid reproduction and mobility can trigger widespread outbreaks in a short time.

1.1 Characteristics and Damage Caused

Brown planthoppers are small insects that congregate at the base of rice plants and suck plant sap. They are most active during the tillering to heading stages, causing yellowing, leaf drying, and potentially devastating damage known as “hopper burn.” Additionally, they transmit the rice grassy stunt virus, which severely stunts plant growth.

It is estimated that brown planthopper outbreaks can reduce yields by 10–30% annually, equating to losses of thousands of billions of VND for Vietnamese agriculture. Ineffective pest control also undermines quality and reputation for agribusinesses and distributors.

1.2 Challenges in Modern Brown Planthopper Management

After prolonged use of traditional insecticides, brown planthoppers have developed strong resistance, especially to organophosphates and pyrethroids. This requires new solutions that effectively control the pest while aligning with sustainable agricultural practices.

Farmers face simultaneous pressures to reduce chemical use while maintaining yield and meeting increasingly stringent export standards.

Overview of Brown Planthopper on Rice

Explore: How Effective Is Acetamiprid In Controlling Brown Planthoppers In Rice?

2. Introduction to Dinotefuran

Dinotefuran is a standout active ingredient in the third-generation neonicotinoid class. It is widely used to control sap-sucking pests such as planthoppers, aphids, and whiteflies across various crops.

2.1 Mode of Action and Key Advantages of Dinotefuran

Dinotefuran acts on the insect's central nervous system by binding to nicotinic acetylcholine receptors, disrupting neural transmission and causing rapid paralysis and death. Unlike many traditional insecticides, it does not inhibit cholinesterase enzymes and does not affect sodium channels, reducing the risk of cross-resistance.

Outstanding benefits of Dinotefuran in controlling brown planthoppers:

• Rapid action: Kills brown planthoppers within hours after spraying
• Strong systemic penetration: Protects internal plant tissues and provides long-lasting effe
• Low toxicity to beneficial insects and other helpful organisms in the paddy ecosystem
• High efficacy even against insecticide-resistant brown planthopper strains

2.2 Application of Dinotefuran in Brown Planthopper Control

When used alone, Dinotefuran is highly effective against both nymph and adult planthoppers, especially at the early stages of infestation. Farmers often use it when pest density exceeds economic thresholds, allowing for fast pest knockdown and minimizing initial damage.

However, its effect typically lasts only 7–10 days and may not fully suppress multiple pest generations. This highlights the need for combination solutions with other active ingredients to enhance overall efficacy.

Introduction to Dinotefuran

3. Introduction to Buprofezin

Buprofezin is an insect growth regulator (IGR) widely used to control exoskeleton-bearing insects such as planthoppers, thrips, and some beetles.

3.1 Mode of Action and Role in Pest Control

Unlike conventional insecticides, Buprofezin works by inhibiting chitin synthesis, a vital component in the insect exoskeleton. When exposed to Buprofezin, immature planthoppers are unable to molt properly into the next life stage, resulting in death or deformation. For adults, Buprofezin reduces fertility and egg hatchability.

Key benefits of Buprofezin in controlling brown planthoppers:

• Highly effective against early-stage nymphs (instar 1–3), when they are most vulnerable
• Long residual activity: Controls multiple planthopper generations
• Minimal harm to beneficial insects and high safety for human handlers
• Low risk of resistance due to its unique mode of action

3.2 Practical Use of Buprofezin in Rice Cultivation

In rice farming, Buprofezin is typically applied during early infestation stages when nymphs are present in low densities. Its long-term suppression helps prevent planthopper outbreaks, making it especially suitable for Integrated Pest Management (IPM) programs.

However, its slow-acting nature limits its use in emergency situations involving severe outbreaks. This underscores the importance of combining Buprofezin with Dinotefuran, which provides rapid knockdown capability, resulting in a comprehensive pest control solution.

4. Why Combine Dinotefuran and Buprofezin?

Combining the two active ingredients Dinotefuran and Buprofezin offers a comprehensive solution for brown planthopper control, effectively overcoming the limitations of using each active ingredient alone.

4.1 Maximizing Brown Planthopper Control Efficiency

When these two actives are combined, they produce a highly effective dual-action mechanism:

• Dinotefuran provides rapid knockdown of both adult and nymph brown planthoppers, immediately reducing population density and preventing instant crop damage.
   
• Buprofezin controls the developmental process of nymphs, preventing the emergence of the next pest generation, thereby providing long-lasting protection.

According to field studies, the effectiveness of this combination can last 14–21 days, significantly longer than using either active alone. Brown planthopper control rates reach 85–95%, compared to 70–80% when used separately.

4.2 Ideal for Large-Scale Farming and Agribusiness Distribution

For large-scale producers and agrochemical distributors, the combination of Dinotefuran and Buprofezin brings clear economic advantages:

• Fewer spray applications, saving labor and pesticide costs
• Improved rice yields by effectively reducing pest-related damage
• Compliance with sustainable agriculture standards, enhancing export competitiveness
• Lower risk of resistance development, extending the lifespan of active ingredients

This formula also offers distributors a high-performance product to meet growing market demand for integrated pest management (IPM) solutions.

Why Combine Dinotefuran and Buprofezin?

5. Usage Recommendations and Precautions

To ensure maximum effectiveness when combining Dinotefuran and Buprofezin, users should follow some essential guidelines.

5.1 Recommended Dosage and Timing

• Optimal ratio: Dinotefuran 120g/kg + Buprofezin 180g/kg
• Spray concentration: 15–20g per 16L of water (small scale) or 300–400g/ha (large scale)
• Water volume: 400–500L/ha, ensuring even and thorough coverage at the plant base

Best application timing:

• When nymphs make up 60–70% of the planthopper population in the field
   
• When brown planthopper population reaches economic threshold:
  • 15–20 insects per clump during tillering stage
  • 30–40 insects per clump during panicle initiation to heading stage
• Spray in the early morning or late afternoon to avoid degradation by strong sunlight

5.2 Special Precautions

When using the Dinotefuran and Buprofezin mix, users should note:

• Do not mix with highly acidic or alkaline pesticides, especially ACHE-inhibiting compounds like chlorpyrifos, as they may reduce the mixture's effectiveness
• Rotate with insecticides from different mode-of-action groups to prevent resistance development
• Observe a minimum pre-harvest interval (PHI) of 14 days to ensure food safety
• Apply correctly, ensuring the spray solution reaches the plant base, where brown planthoppers typically reside

To achieve the best results, integrate this chemical control with other IPM practices such as:

• Proper crop scheduling
• Synchronous sowing
• Using brown planthopper-resistant rice varieties

6. Conclusion

The combination of Dinotefuran and Buprofezin is a powerful, comprehensive solution for brown planthopper control in rice. With its dual-action mechanism—immediate knockdown and long-term suppression—it helps farmers save on costs, boost productivity, and meet food safety and environmental standards.

For businesses and agrochemical distributors, offering products that combine Dinotefuran and Buprofezin is a strategic move aligned with modern, sustainable agricultural trends. It enhances pest control effectiveness and reinforces the company's reputation as an environmentally responsible supplier.

SATAKA VIETNAM JOINT STOCK COMPANY
Address: No. 246 Nguyen Kim Cuong, Tan Thanh Dong Commune, Cu Chi District, Ho Chi Minh City
Hotline: 0856.555.585 or 0789.917.927
Website: https://sataka.com.vn/