Active ingredient and systemic mode of action
- Contains Myclobutanil 10% Wettable Powder (WP), categorized under FRAC Group 3 (Demethylation Inhibitors - DMI).
- Inhibits the 14-alpha-demethylase enzyme in fungal sterol pathways, preventing the synthesis of ergosterol required for cell membranes.
- Quickly absorbed through plant foliage, moving acropetally toward new growth flushes to provide durable systemic protection.
Target diseases and approved horticultural crops
- Apple: Highly effective curative and preventive spray against apple scab (Venturia inaequalis) and powdery mildew.
- Grapes: Controls powdery mildew (Uncinula necator) on vines, leaves, and developing fruit clusters.
- Chilli and vegetables: Suppresses powdery mildew and fungal leaf spots, maintaining healthy photosynthesizing canopies.
- Rose and floriculture: Protects delicate flower buds and foliage against powdery mildew disfiguration.
Application timing and resistance management
- Apply at early disease appearance or preventively when weather turns humid and favors fungal spore infection.
- Ensure uniform canopy coverage using calibrated spray equipment fitted with hollow-cone nozzles.
- Rotate with non-DMI fungicides (such as strobilurins or multi-site contact fungicides like mancozeb) and follow CIBRC registered label dosages.
Official source
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Central Insecticides Board & Registration Committee (CIBRC) ↗Related on KisanPe
Common questions
What is the active ingredient in Index fungicide?
Index contains Myclobutanil 10% WP, a systemic triazole fungicide.
Which major disease does Index control in apple orchards?
It is widely used to control apple scab and powdery mildew in apple trees.
What is the mode of action of Myclobutanil?
It inhibits fungal ergosterol cell membrane biosynthesis, stopping internal fungal growth.
Is Index fungicide curative or preventive?
It possesses protective, curative, and eradicant activity, making it effective before and after initial infection.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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