Chemical composition and dual mode of action
- Fluopyram (21.37% SC): Pyridinyl-ethyl-benzamide (FRAC Group 7 / SDHI) that blocks mitochondrial respiration at Complex II, inhibiting spore germination and hyphal growth.
- Trifloxystrobin (21.37% SC): Strobilurin class (FRAC Group 11 / QoI) that disrupts electron transfer at Complex III; exhibits strong mesostemic action, binding to leaf wax and redistributing across leaf surfaces.
- Translaminar penetration: Penetrates green tissues to protect both upper and lower leaf surfaces, ensuring excellent rain-fastness within 2 hours of application.
- Long residual control: Provides 15 to 21 days of sustained protection against fungal re-infection.
CIBRC approved crops and target fungal diseases
Approved in Indian agriculture for managing Sheath blight, Leaf blast, and Neck blast in rice; Powdery mildew, Anthracnose, and Die-back in chillies; Purple blotch in onions; and Scab and Powdery mildew in apples. Applying at the early onset of disease halts spore germination and stops fungal lesion spread.
Application guidelines, dosage and safety
- Dilute according to CIBRC approved label recommendations in 150 to 200 liters of water per acre for field crops.
- Ensure uniform foliar coverage using a hollow cone nozzle on a well-maintained knapsack or power sprayer.
- Observe the mandatory Pre-Harvest Interval (PHI) printed on the product packaging before harvesting produce.
- Wear personal protective gear and avoid spraying during high wind or mid-day heat.
Official source
Check the latest rules, benefits and forms here. KisanPe is an independent platform and is not a government website.
Directorate of Plant Protection, Quarantine & Storage (CIBRC) ↗Related on KisanPe
Common questions
What are the active chemical ingredients in Acerbo fungicide?
Acerbo contains Fluopyram 21.37% + Trifloxystrobin 21.37% formulated as a Suspension Concentrate (SC).
What makes Acerbo effective against blast and sheath blight in paddy?
Its dual SDHI and strobilurin modes of action stop fungal cell energy production simultaneously at two distinct respiratory complexes.
What is the rain-fastness duration of Acerbo?
Acerbo is typically rain-fast within 2 hours after spraying, once the chemical deposit has thoroughly dried on the foliage.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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