Hexaconazole 5% SC is a systemic fungicide used to control fungal diseases in many crops.
Common uses:
Rice: Sheath blight
Mango: Powdery mildew
Grapes: Powdery mildew
Chilli: Powdery mildew
Groundnut: Tikka leaf spot and rust
Tea and other crops: Various fungal diseases (as per label recommendations)
General dose:
1–2 ml per litre of water, depending on the crop and disease.
For field spraying, this is typically 200–400 ml per acre with about 150–200 litres of water per acre (varies by crop).
If you tell me which crop (e.g. paddy, mango, chilli, groundnut, grapes, etc.) and which disease, I can give the exact recommended dose and spray timing.