Chemical Profile and Biochemical Action
Hexaconazole delivers both curative and protective activity through acropetal systemic movement.
Key chemical features:
- Active chemistry: Hexaconazole, belonging to the triazole family, available primarily as 5% EC and 5% SC formulations.
- Mode of action: Acts as a demethylation inhibitor (DMI) that halts the biosynthesis of ergosterol, disrupting fungal cell wall development.
- Systemic redistribution: Absorbed rapidly by green foliage and translocated upward toward developing leaves and panicles.
Key Target Diseases Across Indian Agriculture
Hexaconazole is registered across multiple field crops, orchards, and plantation systems.
Major registered crop diseases:
- Paddy: Manages sheath blight (Rhizoctonia solani) and blast, preserving grain filling and reducing lodging caused by weak culms.
- Mango and grapes: Controls powdery mildew (Oidium mangiferae and Uncinula necator) on blossom panicles and young berries.
- Groundnut: Suppresses early and late leaf spots (Tikka disease) and rust, maintaining healthy leaf canopies.
- Apple: Provides protective and curative control against apple scab and powdery mildew in temperate fruit valleys.
Application Protocols and Resistance Management
Responsible fungicide management ensures sustained field efficacy against mutating pathogens.
Field management rules:
- Adhere to label rate: Dilute according to official package instructions; avoid overdosing to prevent chemical leaf tip burning.
- Rotational use: Alternate with multi-site contact fungicides (such as mancozeb or copper compounds) to prevent resistance buildup.
- Protective equipment: Applicators must use nitrile gloves, safety masks, and eye protection during spray preparation.
- Harvest intervals: Observe specified pre-harvest intervals before picking fruits or harvesting field crops.
Official source
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Directorate of Plant Protection, Quarantine & Storage ↗Related on KisanPe
Common questions
What type of fungicide is hexaconazole?
Hexaconazole is a broad-spectrum systemic triazole fungicide that provides protective, curative, and eradicative activity.
What formulation types are common for hexaconazole in India?
It is widely sold as 5% EC (emulsifiable concentrate) and 5% SC (suspension concentrate) formulations.
Can hexaconazole be mixed with contact fungicides?
Yes, combinations of hexaconazole with contact fungicides like mancozeb or captan are frequently used to broaden control and delay resistance.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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