Fujione Fungicide (Isoprothiolane 40% EC) by Rallis India
The Ultimate "Blasticide" for Complete Rice Blast Control and Root Rejuvenation.
Fujione is a specialized systemic fungicide designed specifically for rice ecosystems. Unlike generic options, it acts as a dual-power solution: it eliminates the devastating Rice Blast fungus (Magnaporthe oryzae) while simultaneously acting as a health booster for the plant.
Manufactured by Rallis India (A Tata Enterprise) with Japanese Technology.
Why Choose This Product? Key Benefits
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Curative & Preventive Action: Stops fungal penetration before it starts and cures existing infections in leaves and panicles.
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Phytotonic "Root Booster": Stimulates white root growth, helping rice survive in anaerobic (sour) soils and improving nutrient uptake.
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Long-Lasting Protection: Provides systemic safety for 10 to 14 days, reducing the need for frequent re-spraying.
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Secondary Pest Suppression: Effectively suppresses Brown Plant Hopper (BPH) populations, reducing overall pest pressure.
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Higher Yield Quality: Reduces "chaffy" (empty) grains and ensures uniform ripening for better market prices.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Fujione® 40 EC |
| Technical Name | Isoprothiolane 40% EC |
| IRAC MoA Code | F2 (Phospholipid Biosynthesis) |
| Chemical Group | Dithiolane |
| Formulation | Emulsifiable Concentrate (EC) |
| Toxicity Label | Blue Triangle (Moderately Toxic) |
How It Works: Mode of Action
Fujione works by disrupting the lipid metabolism of the fungus. It specifically targets the cell membrane structure, causing the fungus to collapse.
- Inhibits Penetration: It prevents the fungal spores from piercing the leaf surface (prevents infection pegs).
- Starves the Fungus: It blocks the synthesis of Phosphatidylcholine, a vital fat needed for fungal cell survival.
- Systemic Flow: Once applied, it moves upward (acropetally) through the plant, protecting new leaves and the panicle neck.
Note: Fujione also helps overcome "Akiochi" disease (hydrogen sulfide toxicity) in rice roots.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Paddy (Rice) | Leaf Blast |
| Paddy (Rice) | Neck Blast (Neck Rot) |
| Paddy (Rice) | Node 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) |
|---|---|---|---|---|
| Rice (Leaf Blast) | 300 - 400 ml | 200 L | 1.5 - 2.0 ml | 60 Days |
| Rice (Neck Blast) | 400 - 480 ml | 200 L | 2.0 - 2.4 ml | 60 Days |
| Root Health | 300 ml | 150 L | 1.5 ml | 60 Days |
*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 at the first sign of disease. For Neck Blast, spray at the "Booting Stage" (before panicle emergence).
- Mixing: Compatible with common insecticides like Fipronil or Cartap. Always mix Wettable Powders (WP) first, then Fujione (EC).
- Coverage: Ensure full canopy coverage using 200 Liters of water per acre. Do not use low-volume sprayers for Blast control.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use.
Frequently Asked Questions
1. Does Fujione cure Neck Blast?
Yes, but timing is key. It is most effective when sprayed preventively at the booting stage. Once the neck turns black (rots), it cannot be reversed.
2. Is Fujione safe for fish farming (paddy-fish culture)?
No. Isoprothiolane is toxic to fish. Do not use it in fields where fish are reared or where water flows into fish ponds.
3. What is the benefit of Fujione over Tricyclazole?
While both control blast, Fujione offers extra benefits like root rejuvenation and BPH suppression, which Tricyclazole does not provide.
4. Can I use Fujione for export-quality rice (Basmati)?
Use with caution. Because it has a long PHI (60 days), it should only be used in the early stages (vegetative/booting) to meet export MRL standards.
5. What is the rainfast period for Fujione?
It generally requires 4 to 6 hours without rain after spraying to be fully absorbed by the plant.
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.
