Cyfi Cyazofamid 6.2% + Mancozeb 60.8% Wp
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Cyfi Fungicide (Cyazofamid + Mancozeb): The Specialist for Late Blight
A premium "Tractor Brand" solution for immediate control of Oomycetes in Grapes, Potato, and Tomato.
Cyfi is a high-performance fungicide by Insecticides (India) Limited designed to tackle tough fungal diseases like Downy Mildew and Late Blight. By combining the quick-killing power of Cyazofamid with the long-lasting shield of Mancozeb, Cyfi offers a "double-lock" protection that stops disease instantly—even when other chemicals fail.
Best For: Farmers facing severe disease pressure or resistance issues in high-value crops.
Why Choose This Product? Key Benefits
- ⏱️Instant Energy Blockade: Stops the fungus immediately by cutting off its energy supply (ATP) inside the mitochondria.
- ?️Dual-Action Defense: Provides an outer shield (Mancozeb) and an inner killer (Cyazofamid) for complete crop safety.
- ⏳Resistance Breaker: Highly effective against fungal strains that have developed resistance to older medicines like Metalaxyl.
- ?️Excellent Rainfastness: Sticks firmly to the leaf surface, ensuring protection even during monsoon rains or high humidity.
- ?Phytotonic Effect: Keeps the crop lush and green, helping improve quality and yield (biomass) at harvest.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Cyfi (Tractor Brand) |
| Technical Name | Cyazofamid 6.2% + Mancozeb 60.8% WP |
| IRAC MoA Code | Group 21 (QiI) + Group M03 (Multi-site) |
| Chemical Group | Cyanoimidazole + Dithiocarbamate |
| Formulation | Wettable Powder (WP) |
| Toxicity Label | Blue Triangle (Caution) |
How It Works: Mode of Action
Cyfi employs a synergistic "QiI + Contact" mechanism that attacks the fungus from two angles:
- Energy Disruption (Cyazofamid): It targets the "Qi site" in the fungal mitochondria. This blocks respiration and instantly stops ATP production, paralyzing the zoospores and stopping infection.
- Surface Sterilization (Mancozeb): It covers the leaf surface and disrupts multiple enzymatic processes, killing spores before they can germinate.
- Translaminar Action: The active ingredient penetrates the leaf tissue (moving from top to bottom), killing hidden fungus that contact sprays miss.
This combination ensures Curative (kick-back) action against recent infections and Preventive action against future attacks.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Grapes | Downy Mildew (Plasmopara viticola) |
| Potato | Late Blight (Phytophthora infestans) |
| Tomato | Late Blight (Phytophthora infestans) |
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 (g / Acre) | Water (L / Acre) | Dose (g / Litre) | PHI (Days) |
|---|---|---|---|---|
| Grapes | 500 - 600 g | 200 L | 2.5 g | 40-60 Days |
| Potato | 500 - 600 g | 200 L | 2.5 g | 7-14 Days |
| Tomato | 500 - 600 g | 200 L | 2.5 g | 7-14 Days |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting.
How to Apply: Best Practices
- Timing: Apply preventively (before disease starts) or immediately at the first sign of symptoms (oil spots on leaves). Repeat every 7-10 days.
- Mixing: This is a Wettable Powder (WP). Make a "slurry" (thick paste) with a little water first to dissolve lumps, then add to the main tank.
- Coverage: Ensure full coverage of the foliage. Use 200 Liters of water per acre for best results.
- Safety: Always wear PPE (gloves, mask, goggles). Avoid washing sprayers in fish ponds as it is toxic to aquatic life.
Frequently Asked Questions
1. Does Cyfi cure Late Blight if it has already started?
Yes, Cyfi has "kick-back" action. It can stop recent infections if applied early. However, for severe damage, it is best used to stop further spread.
2. Is Cyfi effective during the monsoon?
Yes. Cyazofamid is highly lipophilic (oil-loving), meaning it binds to the leaf wax and is resistant to wash-off by rain once dry.
3. Can I use Cyfi for Downy Mildew in Cucumber?
While highly effective on Oomycetes, the label specifically recommends it for Grapes, Potato, and Tomato. Consult a local agronomist for off-label use on cucurbits.
4. How is Cyfi different from regular Mancozeb?
Regular Mancozeb is only a contact fungicide (shield). Cyfi adds Cyazofamid, which enters the plant to kill the fungus from the inside, providing far superior control.
5. What is the pack size and price?
Cyfi is a premium product (approx. ₹2,700/kg). It is available in various pack sizes suitable for small and large acreage.
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.