Active ingredients and dual biochemical mode of action
Merivon combines two powerful chemistries targeting fungal cellular respiration.
Technical breakdown:
- Active ingredient 1: Fluxapyroxad 250 g/L (SDHI class) inhibiting succinate dehydrogenase in Complex II of the fungal mitochondrial respiratory chain.
- Active ingredient 2: Pyraclostrobin 250 g/L (strobilurin / QoI class) blocking electron transfer at Complex III, arresting fungal energy production.
- Systemic mobility: Absorbed rapidly into plant tissues, exhibiting excellent translaminar movement and xylem-mediated acropetal protection to safeguard new shoots.
- Plant health benefits: Promotes greener, healthier foliage and improves stress tolerance through physiological AgCelence effects.
Target fungal diseases and horticultural crops
Merivon is registered under CIBRC for specialized disease control in orchards and vegetables.
Key disease targets:
- Apple: Exceptional control against apple scab (Venturia inaequalis) and powdery mildew during green tip, pink bud, and petal fall stages.
- Grapes: Controls powdery mildew and anthracnose across vegetative flushes and berry development.
- Chilli and vegetables: Manages Alternaria leaf spots, anthracnose, and powdery mildew complexes.
- Adhere strictly to label-recommended dilution rates; never exceed registered application concentrations.
Resistance management and safety precautions
Because both active ingredients target specific single fungal metabolic sites, rotate Merivon applications with multi-site contact fungicides (such as mancozeb or captan) to prevent the emergence of resistant fungal strains. Applicators must wear PPE including protective gloves, goggles, and respiratory masks, observing statutory pre-harvest intervals.
Official source
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Central Insecticides Board & Registration Committee (CIBRC) ↗Related on KisanPe
Common questions
What active ingredients are present in Merivon fungicide?
It contains Fluxapyroxad (250 g/L) and Pyraclostrobin (250 g/L) formulated as a Suspension Concentrate (SC).
Which major disease does Merivon control in apple orchards?
It is widely utilized for controlling apple scab (Venturia inaequalis) and powdery mildew during early spring flowering stages.
Why is alternating Merivon with contact fungicides important?
Alternating with multi-site contact protectant fungicides prevents fungal pathogens from developing biochemical resistance to SDHI and QoI chemistries.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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