Active chemical composition and dual mode of action
- Azoxystrobin (11% w/w): Strobilurin class (FRAC Group 11 / QoI) that blocks mitochondrial electron transport at Complex III, stopping fungal spore germination and energy generation.
- Tebuconazole (18.3% w/w): Triazole class (FRAC Group 3 / DMI) that inhibits sterol 14α-demethylase during fungal ergosterol synthesis, arresting hyphal elongation inside plant tissues.
- Dual systemic movement: Rapidly absorbed through leaf cuticles and translocated upward via xylem vessels to protect fresh shoots and floral organs.
- Suspension Concentrate (SC): High-quality formulation providing uniform droplet spreading and excellent rain-fastness.
CIBRC approved target crops and fungal diseases
Approved in Indian agriculture for managing Fruit rot / Anthracnose and Powdery mildew in chillies; Purple blotch and Stemphylium blight in onions; Sheath blight and Blast in rice; Early blight and Late blight in tomato; and Yellow rust and Powdery mildew in wheat.
Application timing, dosage and safety
- Apply at the early onset of disease symptoms or as a preventive measure when weather favors fungal outbreaks (warm, humid conditions).
- Follow approved label recommendations (typically 300 ml per acre diluted in 200 liters of water for field crops).
- 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 conditions.
Official source
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Directorate of Plant Protection, Quarantine & Storage (CIBRC) ↗Related on KisanPe
Common questions
What are the active chemical ingredients in ADAMA Custodia?
Custodia contains Azoxystrobin 11% + Tebuconazole 18.3% formulated as a Suspension Concentrate (SC).
Why is Custodia popular among chilli and onion growers?
It simultaneously controls Anthracnose (fruit rot) and powdery mildew in chillies, and purple blotch in onions with systemic curative and preventive action.
What is the advantage of combining a triazole with a strobilurin?
The combination attacks fungal pathogens at two distinct biochemical sites, broadening the disease spectrum while delaying fungal resistance.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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