Whether you’re battling early blight in tomatoes or sheath blight in rice, Amistar Top stands out as a reliable solution that not only controls diseases but also promotes the overall vitality of the plant.
About Amister Top Fungicide
Amistar Top Fungicide is a broad-spectrum systemic fungicide, widely trusted by farmers for its superior disease control and long-lasting protection. Developed by Syngenta, a global leader in crop protection, this powerful product is designed to boost plant health and enhance yield quality.
Chemical Composition of Amister Top Fungicide
Amistar Top contains two key active ingredients:
- Azoxystrobin 18.2% w/w
- Difenoconazole 11.4% w/w
- Formulation Type: Suspension Concentrate (SC)
By combining two potent active ingredients, Amistar Top delivers effective control against a wide range of fungal diseases in crops like rice, vegetables, oilseeds, and cereals. This dual-action formula ensures both preventive and curative activity, making Amistar Top a complete fungicide for effective crop protection.
Amister Top Fungicide
Mode of Action of Amister Top Fungicide
Azoxystrobin, a strobilurin fungicide, acts by inhibiting mitochondrial respiration in fungal cells. It blocks the transfer of electrons in the fungal mitochondria, disrupting energy production. This leads to the death of the fungal pathogen.
Difenoconazole, a triazole fungicide, interferes with the biosynthesis of ergosterol, an essential component of fungal cell membranes. Without ergosterol, the fungus cannot grow or reproduce.
Together, these two modes of action offer broad-spectrum protection and minimise the risk of resistance development.
Benefits of Amistar Top
✅ Broad-spectrum Control – Tackles multiple fungal pathogens across various crops.
✅ Systemic Action – Moves inside the plant, protecting new growth.
✅ Preventive & Curative – Works both before and after infection.
✅ Plant Health Booster – Enhances photosynthesis, leading to greener and healthier crops.
✅ Long-lasting Effect – Offers extended protection with fewer applications.
✅ Improved Yield & Quality – Reduces crop losses and ensures marketable produce.
Recommended Crops and Doses
Amistar Top is suitable for use on a wide range of crops, including:
- Rice – Sheath blight, blast
- Tomato – Early blight, late blight
- Chilli – Anthracnose, leaf spots
- Onion – Purple blotch, downy mildew
- Cabbage & Cauliflower – Alternaria leaf spot
- Soybean – Rust
- Groundnut – Leaf spot, rust
- Cotton – Alternaria, Myrothecium leaf spot
Dosage Instructions
The standard recommended dose for Amistar Top is:
- 150-200 ml per acre
- Dilution: Mix with 200 litres of water per acre
- Application Time: Apply at the first sign of disease or as a preventive measure, depending on weather and crop stage. Repeat application after 10–15 days if necessary.
Always follow label instructions and consult an agricultural expert for crop-specific guidance.
Alternative Products by Other Brands

If Amistar Top is unavailable, here are some similar alternatives from other reputable manufacturers:
Brand | Product Name | Composition |
---|---|---|
Bayer | Nativo | Tebuconazole + Trifloxystrobin |
UPL | Opera | Pyraclostrobin + Epoxiconazole |
FMC | Benevia | Cyantraniliprole (note: different action) |
ADAMA | Custodia | Azoxystrobin + Tebuconazole |
Dhanuka Agritech | Markzole Gold | Azoxystrobin + Difenoconazole |
Always compare the formulation, dosage, and target diseases before switching products.
FAQs about Amistar Top Fungicide
Q1. Is Amistar Top safe for all crops?
It is registered for many crops, but always check the label or consult a local agronomist for crop-specific usage.
Q2. Can I mix Amistar Top with other agrochemicals?
Yes, it is compatible with most insecticides and micronutrients. A jar test is recommended before large-scale mixing.
Q3. How many times should I apply it?
Generally, 1–2 applications per season are sufficient, depending on disease pressure and crop stage.
Q4. Does it leave any residue on fruits or vegetables?
It has a pre-harvest interval (PHI) of 7–14 days depending on the crop. Always harvest only after this period for safety.
Q5. What is the shelf life of Amistar Top?
It has a shelf life of 2 years from the manufacturing date if stored in a cool, dry place away from direct sunlight.
Other Popular Products by Syngenta
Syngenta is known for a wide range of crop protection and seed products. Here are some top-performing products from the same company:
- Actara – A powerful insecticide for sucking pests (Thiamethoxam 25% WG)
- Ridomil Gold – Fungicide for downy mildew and phytophthora (Metalaxyl + Mancozeb)
- Gramoxone – Non-selective herbicide (Paraquat Dichloride)
- Curacron – Broad-spectrum insecticide for bollworms (Profenephos)
- Score – Fungicide effective on powdery mildew and other fungal infections (Difenoconazole)
These products complement Amistar Top and help create a comprehensive crop protection program.
Final Thoughts: Invest in Crop Health with Amistar Top
Fungal diseases can severely affect your crop’s health, yield, and market value. Amistar Top provides a scientifically proven and farmer-trusted solution to keep diseases at bay while improving plant vigour. Its dual-action chemistry offers a combination of protection and plant vitality that translates into higher yields and better returns.
If you’re looking for an all-in-one fungicide with lasting effectiveness, Amistar Top is a worthy investment for your farm

PGR Miraculan is best for overall crop growth. You can buy it online at www.online.agritell.com
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