Syngenta Amistar Fungicide (Azoxystrobin 23% SC)
The Broad-Spectrum Solution for Disease Control and Higher Yields
Syngenta Amistar is a world-class systemic fungicide that does more than just kill fungus. Using the power of Azoxystrobin, it protects your crops from a wide range of diseases while actively improving plant health. It helps maintain green leaves for longer, leading to better photosynthesis and significantly higher quality yields.
Best For: Paddy (Rice), Tomato, Potato, Chilli, Grapes, and Mango farmers looking for preventive protection and crop quality enhancement.
Why Choose This Product? Key Benefits
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Rainfast in 2 Hours: Absorbs quickly into the plant system, so it won't wash away if it rains 2 hours after spraying.
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Broad-Spectrum Protection: Controls all four major groups of fungi (Ascomycetes, Basidiomycetes, Oomycetes, Deuteromycetes) in one shot.
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The "Greening Effect": Delays plant aging (senescence) and keeps leaves green longer, allowing for more energy production and higher yields.
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Systemic Action: Moves upward in the plant (acropetal movement) to protect new leaves that grow after spraying.
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Safe Formulation: The Suspension Concentrate (SC) is water-based and gentle on crops, preventing burning even in high temperatures.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Amistar |
| Technical Name | Azoxystrobin 23% SC |
| IRAC MoA Code | Group 11 (Strobilurin) |
| Chemical Group | QoI Fungicide |
| Formulation | Suspension Concentrate (SC) |
| Toxicity Label | Blue Triangle (Caution) |
How It Works: Mode of Action
Amistar works by targeting the energy center (mitochondria) of the fungal cell.
- Stops Energy Production: It blocks the respiration process in the fungus, cutting off its energy supply (ATP).
- Prevents Germination: It is highly effective at stopping fungal spores from germinating and entering the leaf surface.
- Stress Tolerance: It regulates the plant's stomata and reduces ethylene production, making the crop more resilient to drought and heat stress.
Note: Because it works best on spore germination, Amistar is most effective when used preventively (before the disease spreads).
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Rice (Paddy) | Blast, Sheath Blight, Glume Discoloration |
| Tomato & Potato | Early Blight, Late Blight |
| Chilli & Mango | Anthracnose (Fruit Rot), Powdery Mildew |
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 (Paddy) | 200 ml | 200 L | 1 ml | 30-35 |
| Tomato | 200 ml | 200 L | 1 ml | 3-5 |
| Chilli / Potato | 200 ml | 200 L | 1 ml | 5 (Chilli) / 12 (Potato) |
*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 appears) or at the very first sign of infection. For Rice, apply at booting/panicle initiation stages.
- Mixing: Fill the tank half with water, add the required dose of Amistar, mix well, and then fill the rest. Do NOT mix with silicone-based stickers.
- Coverage: Ensure thorough coverage of the foliage. For diseases like Sheath Blight, ensure spray reaches the lower stems.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use.
Frequently Asked Questions
1. Can I use Amistar on Apple trees?
NO. Amistar is highly toxic to certain apple varieties (like McIntosh). Never spray it on apples, and avoid drift into apple orchards.
2. What is the rainfastness period?
Amistar becomes rainfast in 2 hours. If it rains after this time, re-spraying is usually not required.
3. Can I mix Amistar with other chemicals?
Yes, it is compatible with many insecticides (like Lambda-cyhalothrin). However, do not mix with Ranman Top or silicone-based adjuvants.
4. Should I use Amistar or Amistar Top for Rice?
For Rice, Amistar Top is often preferred because it contains Difenoconazole, which cures existing Sheath Blight infections, while Azoxystrobin prevents Blast.
5. How do I prevent resistance build-up?
Do not spray Amistar more than 2 times consecutively. Rotate with fungicides from a different chemical group (like Mancozeb) to keep it effective.
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.
