Amistar Fungicide
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Syngenta Amistar Fungicide (Azoxystrobin 23% SC)
The World's Best-Selling Broad-Spectrum Fungicide with "Greening Effect"
Syngenta Amistar is a systemic fungicide based on Azoxystrobin, derived from natural mushroom defense mechanisms. It offers premium protection against all four major groups of fungal diseases while keeping your crop greener for longer.
Best For: Paddy (Rice), Grapes, Mango, Tomato, Potato, and Chili.
[Image of healthy paddy crop with green leaves]Why Choose This Product? Key Benefits
- ⏱️Rapid Action: Becomes rainfast in just 2-3 hours, ensuring efficacy even in uncertain weather.
- ?️Complete Protection: Controls Ascomycetes, Basidiomycetes, Deuteromycetes, and Oomycetes (all 4 fungal groups).
- ⏳The "Greening Effect": Delays leaf aging (senescence), keeping plants green longer for higher photosynthesis and yield.
- ?️Weather Proof: Excellent retention on the leaf surface; does not wash off easily.
- ?Stress Tolerance: Helps crops withstand drought and heat stress by improving water and nitrogen use efficiency.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Amistar® |
| Technical Name | Azoxystrobin 23% SC |
| IRAC MoA Code | Group 11 (QoI Inhibitor) |
| Chemical Group | Strobilurin |
| Formulation | Suspension Concentrate (Liquid) |
| Toxicity Label | Blue Triangle (Caution) |
How It Works: Mode of Action
Amistar works by cutting off the energy supply of the fungus. It targets the mitochondria (the powerhouse of the cell) and blocks respiration.
[Image of fungal cell mitochondrial respiration inhibition diagram]- Stops Energy (ATP): It blocks electron transfer in the fungal cell, stopping ATP production instantly.
- Prevents Germination: It is most effective against spore germination, killing the fungus before it can penetrate the leaf.
- Systemic Movement: Once applied, it moves systemically within the xylem to protect new growth.
Result: The fungus starves and dies, while the plant remains healthy and green.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Paddy (Rice) | Sheath Blight, Blast, Dirty Panicle, Grain Discoloration |
| Tomato & Potato | Early Blight, Late Blight |
| Grapes & Mango | Downy Mildew, Powdery Mildew, Anthracnose |
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 |
| Tomato / Potato | 200 ml | 200 L | 1 ml | 3 - 7 |
| Chilli | 200 ml | 200 L | 1 ml | 5 |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting. *For large fruit trees (Mango), use 1 ml per liter of water.
How to Apply: Best Practices
- Timing: Apply preventively (before disease appears) or at the very first sign of disease. For Rice, apply at the "Booting" stage.
- Mixing: Fill tank 1/2 with water, add Amistar, agitate, add partner products (if any), then fill the rest. Do not leave the mixture overnight.
- Coverage: Ensure thorough coverage of the foliage, especially the lower leaves.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. WARNING: DO NOT USE ON APPLE TREES (Severe Phytotoxicity).
Frequently Asked Questions
1. What is the "Greening Effect"?
It is a physiological benefit where Amistar delays leaf aging and improves nitrogen uptake, keeping the crop green longer to maximize yield quality and quantity.
2. Can I use Amistar on Apple trees?
NO. Amistar is highly toxic to Apple trees and can cause severe leaf drop (phytotoxicity). Do not even use sprayers that were used for Amistar on apples without deep cleaning.
3. Is Amistar curative or preventive?
It has both properties, but it works best as a preventive spray (before disease spreads) to kill spores during germination.
4. Which insecticides can I mix with Amistar?
It is physically compatible with common insecticides like Actara (Thiamethoxam), Karate (Lambda-cyhalothrin), and Chess (Pymetrozine). Always do a small jar test first.
5. How many times can I spray Amistar in one season?
To prevent resistance, do not spray more than 2 consecutive times. Rotate with a different fungicide group (like Triazoles).
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. Toxic to aquatic life; do not use near fish ponds.