Key Active Ingredients in Dhanuka's Fungicide Portfolio
Dhanuka formulates both single-molecule and combination fungicides representing systemic, translaminar, and contact modes of action.
- Kasugamycin (e.g., Kasu-B): An aminoglycoside antibiotic fungicide that inhibits protein biosynthesis in fungal and bacterial cells; highly effective against paddy blast and bacterial leaf spot.
- Validamycin (e.g., Sheathmar): An antibiotic fungicide of the validamycin group that halts trehalase enzyme function in Rhizoctonia solani, the causal organism of paddy sheath blight.
- Hexaconazole (e.g., Hexadhan): A broad-spectrum systemic triazole that halts ergosterol biosynthesis, controlling powdery mildew, rust, and leaf spots in fruits and vegetables.
- Azoxystrobin + Difenoconazole (e.g., Godiwa Super): Dual-action strobilurin and triazole premix providing translaminar protection against anthracnose and blights.
- Mancozeb (e.g., Dhanuka M-45): Multi-site contact dithiocarbamate protective fungicide ideal for resistance management.
Target Crops and Disease Management Spectrum
Dhanuka fungicides protect major food crops, pulses, and commercial horticulture against severe seasonal fungal epiphytotics.
- Paddy: Provides comprehensive management of neck blast, leaf blast, sheath blight, and bacterial leaf blight during tillering and flowering stages.
- Chili and Tomato: Controls anthracnose (fruit rot), early blight, late blight, and powdery mildew, preventing blossom drop and fruit scarring.
- Soybean and Groundnut: Controls rust, tikka leaf spot, and collar rot, maintaining photosynthetic leaf canopy during pod filling.
- Grapevine and Orchard Crops: Manages downy mildew, powdery mildew, and anthracnose through systematic seasonal spray schedules.
Application Guidelines and CIBRC Safety Rules
Maximizing fungicidal efficacy while preventing environmental damage requires strict compliance with registered label recommendations.
- Preventive Scheduling: Apply protective fungicides at early disease detection or when weather forecasts predict high humidity and overcast conditions.
- Calibration and Spray Quality: Maintain uniform canopy coverage using hollow-cone nozzles and recommended water dilution volumes per hectare.
- Resistance Management: Avoid repeated back-to-back applications of single-site systemic fungicides; alternate with multi-site contact fungicides.
- Pre-Harvest Interval (PHI): Observe statutory waiting periods between final chemical application and crop harvesting.
Official source
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Central Insecticides Board & Registration Committee (CIBRC) ↗Related on KisanPe
Common questions
What is Kasu-B fungicide used for in agriculture?
Kasu-B (Kasugamycin 3% SL) is an antibiotic fungicide primarily used to control blast disease in paddy and bacterial leaf spots in vegetable crops.
What is Sheathmar fungicide, and which disease does it control?
Sheathmar contains Validamycin 3% L, an antibiotic fungicide specifically formulated to control sheath blight (Rhizoctonia solani) in paddy.
How does rotating fungicides prevent resistance?
Rotating fungicides with different FRAC modes of action prevents surviving fungal mutants from multiplying and establishing resistant populations in the field.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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