Syngenta Amistar® Fungicide: The Ultimate Disease Protection & Yield Booster
Unlock the power of the "Greening Effect" with the world's leading broad-spectrum fungicide.
Syngenta Amistar® (Azoxystrobin 23% SC) is a revolutionary systemic fungicide that offers more than just disease control. It protects your crops from fungal attacks while simultaneously delaying aging (senescence), keeping leaves greener for longer. This unique dual action ensures your plants stay healthy and produce a higher quality, more abundant harvest.
Best For: Paddy (Rice), Grapes, Tomatoes, Potatoes, Chillies, and Mangoes.
Why Choose This Product? Key Benefits
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Rapid Systemic Action: Quickly penetrates leaf tissues to kill fungus before it spreads.
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Broad Spectrum Shield: Controls all four major groups of fungi (including blasts, blights, and mildews) in one shot.
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Long-Lasting Protection: Provides extended residual control, reducing the need for frequent spraying.
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Excellent Rainfastness: Absorbs into the plant within 2-3 hours, ensuring efficacy even if it rains shortly after application.
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The "Greening Effect": Improves nitrogen uptake and delays leaf aging, resulting in higher yields and better produce quality.
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/Green (Depends on Pack Size) - Caution |
How It Works: Mode of Action
Amistar works by targeting the energy center (mitochondria) of the fungal cells. It is most effective when used preventively or at the very early stages of disease.
[Image of Azoxystrobin mode of action diagram]- Energy Blockade: It blocks the electron transfer in the fungal cell's respiration process.
- Starvation: This instantly stops the production of ATP (energy), which the fungus needs to grow.
- Spore Death: Without energy, fungal spores cannot germinate or penetrate the leaf, causing the fungus to die.
Note: Amistar also has antisporulant activity, meaning it stops the disease from spreading to healthy plants.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Paddy (Rice) | Blast, Sheath Blight, Dirty Panicle |
| Tomato & Potato | Early Blight, Late Blight |
| Grapes & Chilli | Powdery Mildew, Downy 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 / Wheat / Maize | 200 ml | 200 L | 1 ml | 30-35 |
| Tomato / Chilli / Potato | 200 ml | 200 L | 1 ml | 3-7 |
| Grapes / Mango / Cucumber | 200-240 ml | 200 L+ | 1 ml | 7-14 |
*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. Best sprayed in the morning or late afternoon.
- Mixing: Fill the tank halfway with water, add the required dose of Amistar, agitate well, and then fill the rest of the water. Use the mixture immediately.
- Coverage: Ensure full coverage of the plant foliage, especially the undersides of leaves where fungi often hide.
- 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). Do not spray on apples, and do not let the spray drift onto nearby apple trees.
2. Is Amistar rainfast?
Yes, Amistar becomes rainfast within 2 to 3 hours. Rain occurring after this period will not wash away the product.
3. Can I mix Amistar with other products?
Yes, it is generally compatible with insecticides like Actara or Karate. However, always conduct a small physical compatibility test first.
4. How often should I use it?
To prevent resistance, do not apply Amistar more than two times consecutively. Rotate with fungicides that have a different mode of action.
5. What is the shelf life?
When stored in a cool, dry place in its original unopened container, Amistar typically has a shelf life of 2 years from the date of manufacture.
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.
