Fungicide
Azoxystrobin 4.8% + Chlorothalonil 40% SC
Formulation
- Type: Suspension Concentrate (SC)
- Active Ingredients (a.i.):
- Azoxystrobin – 4.8% w/w
- Chlorothalonil – 40% w/w
- Total a.i.: 44.8%
Mode of Action
- Azoxystrobin (Strobilurin fungicide):
- Systemic, translaminar action.
- Inhibits fungal respiration by blocking electron transport in cytochrome bc1 complex.
- Prevents spore germination and mycelial growth.
- Chlorothalonil (Contact fungicide):
- Broad-spectrum, multi-site inhibitor of fungal enzymes.
- Prevents spore germination and disease spread on leaf surface.
- Combination: Provides systemic + contact action → preventive & curative, lowers risk of resistance.
Applicable Crops
- Grapes
- Tomato
- Potato
- Chili
- Onion
- Cucurbits (melon, cucumber, pumpkin)
- Pulses
- Wheat (where registered)
Target Diseases
- Downy mildew (Plasmopara viticola)
- Late blight (Phytophthora infestans)
- Early blight (Alternaria solani)
- Leaf spots (Alternaria, Cercospora)
- Anthracnose (Colletotrichum spp.)
- Rusts (on pulses, cereals)
Recommended Dose
Crop | Target Disease | Formulation Dose | Water Volume |
Grapes | Downy mildew | 600–800 ml/ha | 500–600 L |
Tomato/Potato | Late blight, Early blight | 600–800 ml/ha | 500–600 L |
Chili/Onion | Anthracnose, Leaf spot | 600–800 ml/ha | 500–600 L |
Pulses | Rusts, Leaf spots | 500–700 ml/ha | 400–500 L |
- First spray at disease appearance; repeat at 10–12 day intervals.
- Maximum 2–3 sprays per season to avoid resistance build-up.
Mode of Application
- Foliar spray using knapsack or tractor-mounted sprayers.
- Ensure uniform coverage on upper and lower leaf surfaces.
- Avoid spraying during hot sun, strong winds, or rains.
Advantages
- Dual mode of action: systemic + contact → reliable disease management.
- Broad-spectrum activity against many fungal pathogens.
- Helps manage resistance risk compared to single fungicides.
- Protects new growth (systemic) and exposed foliage (contact).
- Longer protection period compared to contact fungicides alone.