Active Ingredient and Ergosterol Inhibition Mechanism
Propiconazole belongs to the triazole chemical group (FRAC Group 3), functioning as a Demethylation Inhibitor (DMI).
It blocks the C-14 demethylation of lanosterol, halting the biosynthesis of ergosterol—an essential component of fungal cell membranes—arresting fungal hyphal growth inside plant tissues.
- Active Molecule: Propiconazole 25% EC (Emulsifiable Concentrate)
- DMI Mechanism: Inhibits ergosterol synthesis, causing fungal cell wall disruption and mycelial collapse
- Acropetal Translocation: Rapidly absorbed through foliage and translocated upward via plant xylem to protect newly emerging shoots
- Fast Rainfastness: Absorbed into plant tissue within 1 to 2 hours, resisting monsoon washoff
Target Crops and Major Fungal Diseases
Tilt is widely applied across North India's rabi wheat belt and peninsular commercial cropping zones.
In wheat, it is the primary defense against devastating stripe rust (yellow rust) epidemics that threaten food security.
- Wheat: Yellow rust (Puccinia striiformis), brown rust, Karnal bunt, and powdery mildew
- Paddy (Rice): Sheath blight (Rhizoctonia solani) and false smut management
- Groundnut: Early and late leaf spot (tikka disease) and rust
- Tea: Black rot and blister blight in plantation estates
Application Guidelines and Resistance Prevention
For optimal wheat rust control, spray Tilt at the first visual appearance of yellow rust pustules on lower leaves or following agricultural university weather advisories.
Ensure high spray volume and adequate nozzle pressure to cover both upper and lower canopy foliage.
- Foliar Dilution: Apply at 1 ml per liter of water (approx. 200 ml per acre in 200 liters of water)
- Nozzle Selection: Use hollow-cone nozzles delivering fine spray mist for complete foliar coverage
- Resistance Stewardship: Avoid excessive repeated mono-applications; alternate with strobilurin or multi-site protective fungicides
Official source
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Central Insecticides Board & Registration Committee ↗Related on KisanPe
Common questions
What is the active chemical in Syngenta Tilt?
Tilt contains propiconazole 25% EC, a systemic triazole fungicide.
Is Tilt effective against yellow rust in wheat?
Yes, Tilt (propiconazole 25% EC) is the standard recommended fungicide for managing yellow rust and brown rust in wheat.
What is Karnal bunt in wheat and does Tilt control it?
Karnal bunt is a fungal disease causing fishy-smelling blackened wheat kernels; prophylactic spraying of Tilt at heading suppresses the infection.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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