Sarthak Fungicide (Kresoxim-methyl 15% + Chlorothalonil 56% WG)
The Ultimate "Double-Power" Protection for Potato and Chilli Crops against Blight and Fruit Rot.
Sarthak Fungicide by Rallis India (a Tata Enterprise) is a new-generation solution designed to protect your high-value crops. By combining two powerful chemistries, it not only stops fungus instantly but also keeps your plants greener for longer, ensuring higher yields and premium quality produce.
Why Choose Sarthak? Key Benefits
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Instant Disease Stop: Acts quickly to kill fungal spores on the surface and halts infection inside the leaf.
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Dual Action Power: Combines "Contact" protection with "Meso-systemic" reach to cover the whole leaf, even the undersides.
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Long-Lasting Relief: Provides robust protection for 10 to 15 days, reducing the need for frequent sprays.
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Excellent Rainfastness: Sticks firmly to leaves and resists washing off during rain or irrigation.
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The "Greening Effect": Keeps leaves green and healthy (Phytotonic effect), allowing plants to produce bigger potatoes and shinier chillies.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Sarthak |
| Technical Name | Kresoxim-methyl 15% + Chlorothalonil 56% WG |
| IRAC MoA Code | Group 11 (Strobilurin) + Group M5 (Chloronitrile) |
| Chemical Group | Strobilurin + Chloronitrile |
| Formulation | WG (Water Dispersible Granules) |
| Toxicity Label | Blue / Yellow Triangle (Depending on Pack) |
How It Works: Mode of Action
Sarthak fights fungus on two fronts to prevent resistance and ensure a clean crop:
- Energy Blockade (Kresoxim-methyl): It enters the fungal cells and targets the mitochondria. By blocking their ability to breathe and produce energy (ATP), it kills the fungus immediately.
- Multi-Site Shield (Chlorothalonil): It acts as a contact barrier on the leaf surface. It attacks multiple parts of the fungal cell simultaneously, making it impossible for the disease to develop resistance.
- Synergistic Protection: While one ingredient cleans the inside of the leaf (Curative), the other protects the outside (Preventative), creating a complete safety net.
Note: The "meso-systemic" action allows the medicine to move through the leaf layers to kill hidden fungus on the underside.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Potato | Late Blight (Phytophthora infestans), Early Blight (Alternaria solani) |
| Chilli | Fruit Rot (Anthracnose), Powdery Mildew, Die-back |
| Vegetables | Leaf Spots and Mildews (General Protection) |
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) |
|---|---|---|---|---|
| Chilli | 300 g | 150 - 200 L | ~2 g | 5 Days |
| Potato | 300 g | 150 - 200 L | ~2 g | 23 Days |
| Tank Mix (15L) | - | - | 30 g / Pump | - |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting.
How to Apply: Best Practices
- Timing: Apply prophylactically (before disease starts) or at the very first sign of disease spots for best results. Repeat every 10-15 days.
- Mixing: The WG granules dissolve easily. Half-fill the tank, add the granules, and then fill the rest. No dust, no mess.
- Coverage: Ensure full coverage of the plant foliage. Sarthak’s translaminar action helps, but good spraying technique is key.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Do not spray near fish ponds.
Frequently Asked Questions
1. Does Sarthak cure disease after it has started?
Yes, Sarthak has curative properties. It can stop early-stage infections (like small oil spots in late blight), but it is most effective when used before the disease spreads severely.
2. What is the benefit of the "Greening Effect"?
It delays the aging of the leaves. Greener leaves mean more photosynthesis, which leads to bigger potato tubers and higher quality chilli fruits.
3. Can I mix Sarthak with insecticides?
Yes, Sarthak is generally compatible with common insecticides like Imidacloprid or Fipronil. However, do not mix it with highly alkaline products like Bordeaux mixture.
4. Is it safe for export crops?
For Chilli, the PHI is short (5 days), making it safe for local markets. However, for exports to the EU, check the latest MRL guidelines regarding Chlorothalonil before use.
5. How much does one acre dose cost?
While prices vary by market, the 300g dose per acre is a cost-effective mid-premium solution, cheaper than many specialized single-site molecules.
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.
