Achibu Fungicide (Fenoxanil 5% + Isoprothiolane 30% EC): The Ultimate Rice Blast Solution
Protect your paddy yield with the dual-action power of Achibu, designed to stop Rice Blast in its tracks while boosting crop health.
Rice Blast is the biggest threat to your harvest, but single-mode fungicides often fail due to resistance. Achibu by Nichino India offers a revolutionary "Shield and Sword" technology. It combines two powerful active ingredients to prevent fungal entry and cure existing infections deep inside the plant.
Best For: Farmers facing Leaf Blast or Neck Blast issues who want a premium solution that also improves plant greenness and vigor.
Why Choose This Product? Key Benefits
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Dual-Action "Shield & Sword": Fenoxanil acts as a shield to stop fungus from entering, while Isoprothiolane acts as a sword to kill fungus already inside.
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Complete Blast Control: Highly effective against all stages of the disease, including the destructive Leaf Blast and Neck Blast (Rotten Neck).
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Super Systemic Action: Rapidly moves upward through the plant, protecting new leaves and the emerging panicle shortly after spraying.
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Excellent Rainfastness: The EC formulation absorbs quickly. It is generally safe from wash-off within 1 to 2 hours of application.
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Phytotonic "Greening" Effect: Boosts the plant's immune system and delays aging, keeping leaves greener for longer to maximize grain filling and yield.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Achibu |
| Technical Name | Fenoxanil 5% + Isoprothiolane 30% EC |
| IRAC MoA Code | Group 16.1 (Fenoxanil) + Group 6 (Isoprothiolane) |
| Chemical Group | Propionamide + Dithiolane |
| Formulation | Emulsifiable Concentrate (EC) |
| Toxicity Label | Blue Triangle (Moderately Toxic) |
How It Works: Mode of Action
Achibu fights resistance by attacking the fungus in two completely different ways, making it nearly impossible for the disease to survive.
- Fenoxanil (The Penetration Blocker): It inhibits melanin production in the fungus. Without melanin, the fungus cannot build the pressure needed to puncture the rice leaf, effectively locking it out.
- Isoprothiolane (The Systemic Killer): This component enters the plant system and disrupts the fungus's cell walls and lipid metabolism, stopping the growth of any fungus that has already managed to enter.
- Host Defense Induction: Beyond killing the fungus, Achibu triggers the rice plant's own defense proteins (like PAL and PO), making the plant naturally stronger against stress.
This unique combination ensures that even if a fungal strain is resistant to one chemical, the other will take it down.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Paddy (Rice) | Leaf Blast |
| Paddy (Rice) | Neck Blast (Rotten Neck) |
| Paddy (Rice) | Panicle Blast |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (ml / Acre) | Water (L / Acre) | Dose (ml / Litre) | PHI (Days) |
|---|---|---|---|---|
| Paddy (Leaf Blast) | 400 ml | 150 - 200 L | 2.0 - 2.5 ml | 30 |
| Paddy (Neck Blast) | 400 ml | 150 - 200 L | 2.0 - 2.5 ml | 30 |
| Paddy (Drone Spray) | 400 ml | 10 L (ULV) | 40 ml | 30 |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting.
How to Apply: Best Practices
- Timing: For Leaf Blast, spray immediately when spots appear. For Neck Blast, the timing is critical: spray at the "Booting Stage" (approx. 10% Panicle Emergence) to protect the neck before rot sets in.
- Mixing: Fill your spray tank half with water. Add the required dose of Achibu. Mix well, then add the remaining water. Do not mix with highly alkaline products like Bordeaux mixture.
- Coverage: Use at least 150-200 liters of water per acre with a knapsack sprayer to ensure the medicine reaches the lower canopy. For drones, follow standard SOPs for Ultra Low Volume.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Avoid spraying directly into fish ponds as it affects aquatic life.
Frequently Asked Questions
1. Can I mix Achibu with insecticides for Stem Borer?
Yes, Achibu is generally compatible with modern insecticides like Chlorantraniliprole (Coragen) and Spinetoram. This allows you to control Blast, Stem Borer, and Leaf Folder in a single spray.
2. What is the "Phytotonic Effect"?
Achibu doesn't just kill fungus; it stimulates the rice plant to produce defense enzymes. This keeps the leaves greener for longer, leading to better grain filling and higher yields.
3. Is Achibu safe for Drone spraying?
Yes, the EC formulation dissolves easily and is suitable for drones. Ensure your service provider calibrates the drone to push the spray down into the lower leaves for maximum effect.
4. How soon after spraying is it safe from rain?
The product is usually rainfast within 1 to 2 hours. If it rains lightly, the formulation's ability to stick to the leaf ensures continued protection.
5. Why is this better than Tricyclazole?
Tricyclazole is an older molecule mainly for prevention. Achibu offers both prevention and cure (systemic action) and uses two different chemicals to prevent the fungus from developing resistance.
Safety & Disclaimer
Always read and follow the instructions on the official product label. The information provided here is for guidance only. Use personal protective equipment (PPE) during application. This product carries a Blue Triangle (Moderately Toxic) label; handle with care and keep away from children and aquatic bodies.
