Active Ingredient and Protein Synthesis Mode of Action
Kasugamycin belongs to the aminoglycoside antibiotic class (FRAC Group 24), functioning as a protein biosynthesis inhibitor.
It specifically binds to the 30S ribosomal subunit of pathogenic bacteria and fungi, preventing aminoacyl-tRNA binding and shutting down protein synthesis.
- Dual Activity: Effective against both plant pathogenic fungi (Pyricularia oryzae) and pathogenic bacteria (Xanthomonas and Pseudomonas)
- Systemic & Translaminar: Rapidly absorbed through leaves and roots, moving acropetally to protect newly expanding foliage
- Mycelial & Hyphal Arrest: Halts mycelial elongation, appressorium formation, and lesion expansion in active blast infections
Target Diseases and Crop Indications
Kasugamycin is labeled for staple food grains and high-value horticulture vulnerable to bacterial blights and blast pathogens.
In rice, it provides proven control against leaf blast, neck blast, and bacterial leaf blight (BLB).
- Paddy (Rice): Rice blast (Pyricularia oryzae) and bacterial leaf streak
- Tomato & Chilli: Bacterial wilt and bacterial leaf spot (Xanthomonas campestris)
- Pomegranate: Bacterial blight or 'Telya' disease causing dark oily spots on fruit rinds
- Citrus: Citrus canker suppression when tank-mixed with copper protectants
Application Guidelines and Tank-Mix Compatibility
Apply Kasugamycin 3% SL preventively at early disease onset, ensuring thorough coverage of both leaf surfaces and emerging panicles.
Kasugamycin is compatible with most neutral insecticides and fungicides, but should not be mixed with highly alkaline chemical sprays.
- Foliar Dilution: Apply at 2 to 2.5 ml per liter of water (approx. 400 to 500 ml per acre in 200 liters of water)
- Copper Combination: Tank-mixing with copper oxychloride establishes a synergistic dual bactericidal and fungicidal barrier
- Safety Profile: Exceptionally safe for mammals, honeybees, and beneficial predatory insects with low environmental persistence
Official source
Check the latest rules, benefits and forms here. KisanPe is an independent platform and is not a government website.
Central Insecticides Board & Registration Committee ↗Related on KisanPe
Common questions
What is the technical ingredient in Kasubi / Kasu-B?
It contains Kasugamycin 3% SL, an aminoglycoside antibiotic bactericide and fungicide.
Does Kasugamycin control both fungal and bacterial diseases?
Yes, Kasugamycin uniquely controls both fungal diseases (like rice blast) and bacterial infections (like bacterial blight and leaf spots).
Can Kasugamycin be mixed with Copper Oxychloride (COC)?
Yes, combining Kasugamycin with copper oxychloride is a widely recommended field practice that enhances bactericidal performance.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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