Dual Active Chemistry and Synergistic Mode of Action
Custodia combines two complementary biochemical pathways to protect crops against stubborn fungal infections.
Key biochemical attributes:
- Azoxystrobin (11%): A Group 11 strobilurin fungicide that inhibits mitochondrial cellular respiration by blocking electron transport at the Qo complex, depleting fungal ATP.
- Tebuconazole (18.3%): A Group 3 triazole (DMI) that halts fungal cell membrane integrity by inhibiting sterol 14-alpha-demethylase, arresting mycelial expansion.
- Preventive and curative action: Prevents spore germination and appressorium penetration while eradicating established fungal colonies inside plant tissues.
- Crop greening effect: Promotes nitrate reductase activity, delays foliage senescence, and optimizes plant transpiration, helping crops maintain vigorous green leaves.
Target Diseases and High-Value Crop Indications
Formulated as a concentrated suspension concentrate, Custodia protects field and horticulture crops against destructive fungal pathogens.
Major registered crop and disease targets:
- Chilli: Controls Anthracnose (fruit rot and die-back) and powdery mildew, preventing blossom drop and fruit blemishes.
- Rice (Paddy): Highly effective against Sheath Blight (Rhizoctonia solani) and Blast (Magnaporthe oryzae), maintaining stem strength and panicle filling.
- Onion and Garlic: Manages Purple Blotch (Alternaria porri) and Stemphylium blight, preventing foliage collapse and boosting bulb weight.
- Grapes and Apple: Controls powdery mildew, downy mildew, and scab infections across fruit orchards.
Application Best Practices, Water Volume and Safety
Strategic field application delivers prolonged disease control and compliance with food safety norms.
Key operational guidelines:
- Timely spraying: Apply at initial signs of fungal infection or preventively during weather conditions favorable to disease development.
- Dilution and coverage: Use adequate clean water (typically 150 to 200 liters per acre for field crops) with hollow cone nozzles to ensure thorough canopy wetting.
- Resistance rotation: Rotate Custodia with contact protectants (such as mancozeb or chlorothalonil) or SDHI fungicides to avoid fungal resistance development.
- Pre-harvest intervals (PHI): Adhere strictly to registered pre-harvest intervals before harvesting produce to ensure residue levels comply with national standards.
Official source
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Directorate of Plant Protection, Quarantine & Storage ↗Related on KisanPe
Common questions
What are the active chemical ingredients in Custodia fungicide?
Custodia contains Azoxystrobin 11% + Tebuconazole 18.3% formulated as a suspension concentrate (SC).
What is the physiological greening effect observed with Custodia?
Azoxystrobin enhances plant nitrate reductase activity and delays chlorophyll breakdown, helping treated plants stay greener and photosynthetically active longer.
Which major fungal diseases does Custodia manage in chilli and paddy?
In chilli, it manages Anthracnose (fruit rot and die-back) and powdery mildew; in paddy, it provides strong control against sheath blight and blast.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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