Chemical profile and specific biochemical action
- Active ingredient: Validamycin 3% L (aminoglycoside antibiotic group, FRAC Group 26).
- Mode of action: Specifically inhibits the trehalase enzyme in target fungi, disrupting carbohydrate digestion and cell wall construction.
- Hyphal branching suppression: Causes abnormal branching and tip swelling in pathogen hyphae, arresting fungal penetration into crop stems.
- Crop safety: Highly safe for rice crops and beneficial non-target organisms, leaving no phytotoxic residue.
Target fungal diseases and crop spectrum
- Rice (Paddy): Industry-standard cure for Sheath Blight caused by the soil-borne sclerotial fungus Rhizoctonia solani.
- Potato: Suppresses black scurf and stem canker caused by Rhizoctonia solani.
- Vegetables: Controls damping-off and collar rot in tomato, chilli, and brinjal nurseries.
- Soybean and Pulses: Manages web blight and aerial blight in high-humidity cropping zones.
Application window, spraying technique, and safety
- Application timing: In rice, initiate spray at the first appearance of sheath blight lesions on lower leaf sheaths, typically between tillering and panicle initiation.
- Spray placement: Direct the spray nozzle toward the base and lower stem nodes of the rice canopy where sheath blight develops.
- Water volume: Use 200 litres of water per acre for thorough base wetting of dense paddy stands.
- Eco-friendly profile: Non-hazardous to fish, honeybees, and natural biocontrol agents when used per CIB&RC approved label guidelines.
Official source
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Central Insecticides Board & Registration Committee (CIBRC) ↗Related on KisanPe
Common questions
What is Validamycin 3% L used for in agriculture?
It is an antibiotic fungicide primarily used to control sheath blight in rice and damping-off caused by Rhizoctonia solani.
How does Validamycin stop sheath blight in paddy?
It inhibits the fungal enzyme trehalase, causing abnormal hyphal branching and stopping the spread of infection.
Where should Validamycin spray be directed in a rice field?
It should be directed toward the lower sheaths and stem base of the rice plants where the fungus initiates infection.
Is Validamycin an antibiotic or a synthetic chemical?
It is an agricultural antibiotic derived from the natural fermentation of Streptomyces bacteria.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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