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Key points of pest control technology in early flowering period of pepper
At present, the pepper plants are in their initial flowering stage, making it a critical time for disease and pest management. Based on recent field surveys, the main challenges include "three diseases and two pests"—pepper blight, viral disease, anthracnose, as well as cotton bollworm and tobacco budworm. Effective early prevention and integrated pest management strategies should be implemented to ensure sustainable and environmentally friendly control.
1. **Pepper Blight**
- Apply 5% chlorothalonil dust at a rate of 1 kg per 667 m² every 7 days for 2–3 applications.
- At the onset of the disease, use 64% Oxadixyl WP diluted at 500 times, or 58% Mancozeb Manganese Zinc WP at 500 times, along with 70% Triazophos WP at 500 times.
- In the middle to late stages, when the central disease focus appears, apply 50% Metconazole wettable powder at 800 times, 72.2% Pyraclostrobin at 600–800 times, 64% Triforine WP at 500 times, or 58% Mancozeb Manganese Zinc WP at 500 times. Simultaneously, water the roots of affected plants to enhance effectiveness.
2. **Pepper Virus Disease**
- Early control of aphids is essential. Use 10% Imidacloprid WP at 1500 times, 25% Acetamiprid water-dispersible granules at 5000–10000 times, or 40% Emamectin Benzoate EC at 1000–2000 times.
- During the initial outbreak, spray 20% Viracil WP at 400 times, or 1.5% Fospirhethrin emulsion at 1000 times. Repeat every 7–10 days for 3–4 applications.
3. **Chili Anthracnose**
- Apply preventive sprays 2–4 times before and after the disease appears. Commonly used fungicides include 50% Thiophanate-Methyl WP at 500–800 times, 50% Carbendazim WP at 800–1000 times, and 70% Mancozeb WP at 600–800 times.
4. **Cotton Bollworm**
- When egg density reaches 20–30 eggs per 100 leaves, spray with 200 times Bt Emulsion, 3000 times Avermectin EC (1.8%), 2500 times Sulfuricin EC (5%), or 1000 times Phoxim EC (50%).
5. **Tobacco Budworm**
- When 10% of seedlings are infested, take immediate action. Options include 50% Phoxim EC, 50% Chlorpyrifos EC, 40% Acephate EC, or 80% Trichlorfon soluble powder at 1000 times. Alternatively, use 2.5% Deltamethrin EC, 20% Fenvalerate EC, 2.5% Kavancin EC, 5% Cypermethrin (Laurel) EC, or 10% Cypermethrin EC at 2000 times. Additionally, adult trapping and manual collection in the morning every 5–10 days can help reduce population levels.
Proper monitoring and timely intervention are key to minimizing crop losses and maintaining healthy pepper production. Always follow label instructions and safety guidelines when applying any pesticide.