Contaf Fungicide
Contaf Fungicide from Rallis Crop Protection is a systemic fungicide that effectively controls fungal diseases in crops. It promotes healthy plant growth, prevents disease recurrence, and enhances overall crop yield and quality.
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Rallis Contaf Fungicide (Hexaconazole 5%)
The trusted systemic solution for Sheath Blight, Powdery Mildew, and Rust.
Rallis Contaf is a broad-spectrum systemic fungicide containing Hexaconazole 5%. Brought to you by Rallis India (Tata Group), it is a standard choice for Indian farmers for controlling serious fungal diseases in Rice, Mango, and Grapes.
Why it stands out: Beyond just killing fungus, Contaf acts as a plant tonic. It helps keep leaves green (photosynthetic activity), delays aging, and ultimately helps increase yields and grain weight.
Why Choose Contaf? Key Benefits
- ⏱️Triple Action Protection: Acts as a Protectant (prevents infection), Curative (cures early infection), and Eradicant (stops disease spread).
- ?️Systemic Power: Rapidly absorbed by leaves and roots. It moves upward (acropetal) to protect new leaves that grow after spraying.
- ⏳Long-Lasting Control: Provides reliable protection for 10 to 14 days, reducing the need for frequent spraying.
- ?️Rainfastness: Quickly absorbed into the plant system. The SC formulation (Contaf Plus) is particularly resistant to washing off by rain.
- ?Phytotonic "Greening" Effect: Makes plants greener and healthier, boosts photosynthesis, and improves grain filling/fruit quality.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Contaf / Contaf Plus |
| Technical Name | Hexaconazole 5% |
| IRAC MoA Code | Group 3 (DMI Fungicide) |
| Chemical Group | Triazoles |
| Formulation | EC (Emulsifiable Concentrate) or SC (Suspension Concentrate) |
| Toxicity Label | Blue Triangle (Moderately Toxic) |
How It Works: Mode of Action
Contaf works by inhibiting Ergosterol Biosynthesis (essential for fungal cell walls). Without this, the fungus cannot grow or reproduce.
- Systemic Entry: Once sprayed, the chemical rapidly enters the plant system through leaves or roots.
- Translocation: It travels upwards within the plant xylem, ensuring coverage of new growth that wasn't directly sprayed.
- Translaminar Action: It moves from the upper leaf surface to the lower surface, killing hidden fungi (like mildew) on the underside of leaves.
Result: The fungal cell membrane collapses, leading to the death of the pathogen and cleaner, healthier crops.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Rice (Paddy) | Sheath Blight (Rhizoctonia solani) |
| Mango & Grapes | Powdery Mildew |
| Groundnut & Soybean | Tikka Leaf Spot, Rust |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. Do not under-dose as it causes resistance.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (ml / Acre) | Water (L / Acre) | Dose (ml / Litre) | PHI (Days) |
|---|---|---|---|---|
| Rice (Paddy) | 300 - 400 ml | 150 - 200 L | 2.0 ml | 30 - 40 Days |
| Mango | - | High Vol Spray | 1.5 - 2.0 ml | 27 - 30 Days |
| Grapes | 200 - 400 ml | High Vol Spray | 0.5 - 1.0 ml | 14 Days |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting to avoid chemical residue issues.
How to Apply: Best Practices
- Timing: Apply preventively (before disease starts) or at the very first sign of disease. For Rice Sheath Blight, spray during the Booting to Heading stage.
- Mixing: Do NOT mix with Bordeaux mixture or Lime Sulfur (Alkaline products destroy Contaf). Ensure tank water pH is neutral or slightly acidic (6-7).
- Coverage: Ensure the spray reaches the lower leaf sheaths in paddy and undersides of leaves in vines.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Avoid spraying near fish ponds.
Frequently Asked Questions
1. Is Contaf effective for Sheath Blight in Paddy?
Yes, it is highly effective. It not only controls the blight but also makes the plant greener and strengthens the stems against lodging.
2. Can I mix Contaf with insecticides?
Yes, Contaf is generally compatible with common insecticides like Chlorpyrifos and Cypermethrin. Always perform a small jar test first.
3. What is the difference between Contaf (EC) and Contaf Plus (SC)?
Contaf (EC) is solvent-based and gives a quick knockdown. Contaf Plus (SC) is water-based, safer for flowers (no scorching), and sticks better during rains.
4. Can I use Contaf during the flowering stage of Mango?
Yes, but it is highly recommended to use the SC formulation (Contaf Plus) during flowering to avoid flower drop or burn.
5. Why is there a long waiting period (PHI) for Rice?
Hexaconazole stays in the plant system to provide long protection. To ensure grains are safe for export and consumption, you must stop spraying 30-40 days before harvest.
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.
