Chemical classification and DMI mode of action
- FRAC Group 3 triazole: Belongs to the Demethylation Inhibitor (DMI) class, selectively inhibiting the C14-demethylase enzyme in fungal sterol pathways.
- Ergosterol starvation: Depletion of ergosterol disrupts fungal cell membrane permeability, causing cell death and halting hyphal expansion.
- Acropetal systemic movement: Rapidly absorbed through leaf cuticles and translocated upward via the transpiration xylem stream to protect expanding growth.
- Broad formulation use: Predominantly marketed as an Emulsifiable Concentrate (25% EC) for uniform water dispersion.
CIBRC approved target crops and diseases
Approved under CIBRC label directions for managing Yellow rust (stripe rust) and Brown rust in wheat; Karnal bunt (Tilletia indica) in wheat; Sheath blight in rice; Tikka leaf spot in groundnut; Blister blight in tea; and Sigatoka leaf spot in banana. Spraying at initial disease appearance prevents foliar necrosis and grain yield loss.
Application guidelines, dosage and resistance management
- Dilute according to CIBRC approved label recommendations (typically 200 ml per acre in 200 liters of water for field crops).
- Apply using a knapsack or power sprayer fitted with a hollow cone nozzle for fine droplet coverage.
- Rotate with multi-site contact protectants like Mancozeb or Copper Oxychloride to prevent the emergence of resistant fungal strains.
- Observe the mandatory Pre-Harvest Interval (PHI) printed on the product packaging before harvest.
Official source
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Directorate of Plant Protection, Quarantine & Storage (CIBRC) ↗Related on KisanPe
Common questions
What major fungal diseases does Propiconazole control in wheat?
It provides exceptional control of stripe rust (yellow rust), leaf rust (brown rust), and Karnal bunt in wheat crops.
What is the standard commercial formulation of Propiconazole sold in India?
It is predominantly formulated and sold as an Emulsifiable Concentrate containing 25% active ingredient (Propiconazole 25% EC).
What is a Pre-Harvest Interval (PHI) for Propiconazole?
PHI is the mandatory waiting period in days between the final spray and crop harvest, printed on the label to ensure chemical residues remain within safe limits.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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