Chemical Class and Demethylation Inhibitor Mechanism
Flusilazole 40% EC belongs to the triazole chemical group of systemic fungicides. It functions as a Demethylation Inhibitor (DMI) by selectively inhibiting the C-14 demethylase enzyme involved in fungal ergosterol synthesis.
Without ergosterol, fungal cell membranes lose stability, inhibiting haustoria formation, germ tube growth, and secondary spore generation within host plant tissues.
- Active ingredient: Flusilazole 40 percent w/w EC
- Fungicide group: FRAC Group 3 (Sterol Biosynthesis Inhibitors - DMI)
- Mode of action: Systemic acropetal xylem translocation, translaminar diffusion, and curative vapor action
- Trade names: Marketed globally and in India under premier brand names including Cursor
CIBRC Approved Target Crops and Fungal Diseases
The Central Insecticides Board registers Flusilazole 40% EC for controlling destructive ascomycete and basidiomycete fungal infections in high-value horticulture and plantation crops.
Its translaminar action and systemic distribution allow Flusilazole to halt established, latent fungal infections within plant tissue up to 72 hours post-infection.
- Apple: Apple scab (*Venturia inaequalis*) curative and protective schedules
- Grapes: Powdery mildew (*Uncinula necator*) on leaves and developing bunches
- Groundnut: Tikka leaf spot (*Cercospora arachidicola* / *Phaeoisariopsis personata*)
- Vegetables: Anthracnose and foliar leaf spots
Application Guidelines, Timing, and Resistance Stewardship
Apply Flusilazole preventively or at initial disease onset. In apple orchards, spray at silver tip, pink bud, and petal fall stages to protect young leaves and fruitlets against scab ascospores.
To prevent pathogen resistance, avoid consecutive repeat sprays of single-site DMI fungicides; rotate or tank-mix with multi-site contact protectants like Mancozeb or Zineb.
- Spraying window: Apply at early infection periods before sporulating lesions appear
- Water volume: Ensure calibrated high-volume spraying for complete canopy wetting
- Anti-resistance strategy: Rotate with FRAC multi-site protectants (Group M)
- Pre-Harvest Interval (PHI): Observe mandatory crop waiting periods before harvesting
Official source
Check the latest rules, benefits and forms here. KisanPe is an independent platform and is not a government website.
Central Insecticides Board and Registration Committee (CIBRC) ↗Related on KisanPe
Common questions
What is the primary commercial trade name for Flusilazole in India?
Cursor (manufactured originally by DuPont / Corteva Agriscience) is the most widely recognized commercial brand name for Flusilazole 40% EC.
How does Flusilazole provide curative action against apple scab?
Flusilazole penetrates plant tissues and translocates systemically, halting fungal mycelium development up to 72 hours after spore infection has occurred.
Can Flusilazole be tank-mixed with Mancozeb?
Yes, combining systemic Flusilazole with multi-site contact Mancozeb widens the protective spectrum and reduces the risk of fungal resistance.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
More Crop Protection & Pesticides guides
Ask Sakhi AI in your language, check live mandi prices or plan a loan with KisanPe tools.