Chemical Category

• Type: Fungicide (Systemic, Broad-Spectrum)
• Chemical Class: Triazole (Demethylation Inhibitor – DMI)
• Chemical Formula: C₁₆H₂₂ClN₃O
• CAS Number: 107534-96-3
• IUPAC Name: (RS)-1-p-chlorophenyl-4,4-dimethyl-3-(1H-1,2,4-triazol-1-ylmethyl)pentan-3-ol

Mode of Action

• Tebuconazole inhibits ergosterol biosynthesis, a key component of fungal cell membranes.
• The mode of action is through inhibition of the enzyme C14-demethylase, part of the cytochrome P450
• This leads to disruption of membrane formation, resulting in growth inhibition and death of fungal cells.
• Acts as a protectant, curative, and eradicant fungicide.
• Systemic in nature — absorbed through leaves, stems, and roots and translocated throughout the plant.

Applications

Used to control a broad spectrum of fungal diseases in major crops:

• Cereals: Rusts, smuts, and leaf spots
• Oilseeds (Soybean, Groundnut, Mustard): Leaf spots, powdery mildew
• Fruits: Apple scab, grape powdery mildew, banana leaf spot
• Vegetables: Early and late blight, anthracnose, leaf spot diseases
• Rice: Sheath blight, brown leaf spot
• Others: Coffee rust, sugar beet leaf spot, and ornamentals

Main Uses

• As an active ingredient in various fungicidal formulations, such as:
• Emulsifiable Concentrate (EC)
• Suspension Concentrate (SC)
• Wettable Powder (WP)
• Provides long-lasting protection and curative effects against a wide range of fungal pathogens.
• Commonly used in seed treatment formulations to prevent seed-borne fungal infections.

Storage and Stability

• Store in a cool, dry, and well-ventilated place, away from direct sunlight and sources of ignition.
• Keep containers tightly closed to prevent contamination and moisture ingress.
• Shelf Life: Minimum 2 years under recommended storage conditions.
• Stability: Stable under normal ambient conditions; decomposes when exposed to strong heat or light for extended periods.