Active Ingredient and Biochemical Mode of Action
Bavistin is formulated with Carbendazim, a methyl benzimidazole carbamate (MBC) fungicide classified under FRAC Code 1. It acts as a specific inhibitor of beta-tubulin assembly during fungal cell division.
By binding selectively to beta-tubulin subunits in fungal cells, Carbendazim disrupts microtubule polymerization, halting nuclear spindle formation during mitosis. This biochemical arrest stops fungal hyphal growth, inhibits appressorium development, and prevents spore germination.
- Active Molecule: Carbendazim 50% WP (Wettable Powder).
- FRAC Group: Group 1 Methyl Benzimidazole Carbamate (MBC) beta-tubulin inhibitor.
- Systemic Translocation: Absorbed rapidly by roots and green foliage and moved acropetally via xylem.
- Curative and Preventive: Arrests established fungal mycelia while shielding untreated new growth.
Target Crops and Fungal Disease Spectrum
Bavistin is widely registered across diverse crops including paddy, groundnut, cotton, vegetables, pulses, and fruit trees. It is highly effective against leaf spots (Cercospora), anthracnose (Colletotrichum), powdery mildews, and sheath blights.
It serves as a gold standard for dry and wet seed treatments in cereals, pulses, and oilseeds, effectively sterilizing seed-borne fungal spores and protecting emerging seedlings from damping-off, collar rot, and seed decay.
- Seed Treatment: Protects seedlings against seed-borne fungal pathogens, damping-off, and collar rot.
- Paddy Sheath Blight: Suppresses Rhizoctonia solani lesions on rice tillers and leaf sheaths.
- Groundnut Tikka Disease: Controls both early and late leaf spots (Cercospora arachidicola and Phaeoisariopsis).
- Anthracnose in Fruits: Treats black sunken necrotic spots on mango, grapes, and chilli pods.
Application Guidelines, Soil Drenching and Safety
Bavistin can be applied as a dry seed dressing, wet slurry seed soak, foliar spray, or soil drench around the root zones of nursery seedlings and infected orchard trees. The wettable powder suspends evenly in clean water without clogging spray equipment.
Because single-site MBC fungicides carry a high risk of fungal resistance when used repetitively, growers should avoid consecutive applications. Rotate or tank-mix with multi-site contact protectants like Mancozeb, and adhere strictly to CIBRC-approved pre-harvest intervals.
- Foliar Spraying: Apply at early disease onset; repeat after 10 to 14 days if humid conditions persist.
- Soil Drenching: Drench seedling nursery beds to manage soil-borne damping-off and vascular wilt fungi.
- Resistance Management: Alternate with multi-site contact protectants like Mancozeb (FRAC M03) or Chlorothalonil.
- Operator Safety: Wear protective gloves and face masks during powder handling and spray preparation.
Official source
Check the latest rules, benefits and forms here. KisanPe is an independent platform and is not a government website.
Central Insecticides Board and Registration Committee (CIBRC) ↗Related on KisanPe
Common questions
What is the active chemical ingredient in Bavistin fungicide?
Bavistin contains Carbendazim 50% WP, a systemic benzimidazole fungicide that inhibits beta-tubulin assembly in fungal cells.
How is Bavistin used for seed treatment before sowing?
Bavistin is applied as a dry powder or slurry dressing to certified seeds before sowing to eradicate seed-borne fungal spores and prevent damping-off.
Can Bavistin be mixed with other contact fungicides?
Yes, Bavistin is frequently mixed with contact fungicides like Mancozeb to broaden the disease spectrum and prevent fungi from developing resistance.
Where can farmers check approved dosage rates for Bavistin?
Approved crop dosages, spray intervals, and safety waiting periods are detailed on the product container leaflet and verified on the official CIBRC portal.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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