Chemical Class and Phospholipid Biosynthesis Inhibition
Iprobenfos (IBP) belongs to the phosphorothiolate chemical class (FRAC Group 6). It acts by inhibiting the biosynthesis of phosphatidylcholine and other essential phospholipids within fungal cell membranes.
Without functional phospholipids, fungal hyphae cannot maintain structural membrane integrity or execute normal cell division, arresting mycelial expansion and terminating appressorial penetration into rice foliage.
- FRAC Group 6 Mode of Action: Inhibits phospholipid synthesis in fungal cell membranes.
- Systemic Acropetal Translocation: Rapidly absorbed by rice leaves and sheaths, moving upward through xylem vessels.
- Emulsifiable Concentrate (48% EC): Liquid formulation that disperses cleanly in spray water for uniform canopy coverage.
Target Diseases in Rice Ecosystems
Kitazin 48% EC is officially registered under CIBRC standards for controlling critical economic fungal diseases in paddy fields. It is widely recognized for superior efficacy against rice blast (Magnaporthe oryzae / Pyricularia oryzae).
It protects paddy from leaf blast, neck blast, and nodal blast, while simultaneously curbing sheath blight (Rhizoctonia solani) and stem rot (Sclerotium oryzae) that cause tiller collapse and lodging.
- Rice Blast Control: Curbs spindle-shaped lesions on leaves and prevents rotting of the panicle neck.
- Sheath Blight Suppression: Halts water-soaked oval lesions from climbing up leaf sheaths toward flag leaves.
- Stem Rot Defense: Prevents sclerotial rotting at the water line, reducing lodging before harvest.
Field Application Guidelines and Best Practices
Apply Kitazin at the first visual sign of blast lesions or as a preventive boot-leaf spray prior to panicle emergence. Ensure adequate spray volume using knapsack sprayers fitted with hollow cone nozzles.
Maintain proper water management in paddy fields; avoid excessive stagnant flooding during disease outbreaks, and balance high nitrogen fertilizer applications with adequate potash nutrition.
- Timing: Spray at early vegetative tillering for leaf blast, and at boot stage for neck blast protection.
- Water Volume: Maintain sufficient water to ensure thorough penetration to lower rice tillers.
- Pre-Harvest Interval (PHI): Observe statutory waiting periods specified on the registered product packaging.
Official source
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Central Insecticides Board & Registration Committee (CIBRC) ↗Related on KisanPe
Common questions
What is the active technical ingredient in Kitazin fungicide?
Kitazin contains Iprobenfos (IBP) 48% EC (Emulsifiable Concentrate), an organophosphate systemic fungicide.
How does Iprobenfos stop fungal disease spread?
It inhibits phospholipid biosynthesis in fungal membranes, disrupting cell wall integrity and halting mycelial growth.
Which major rice diseases are controlled by Kitazin?
It controls leaf blast, neck blast, sheath blight, and stem rot in paddy fields.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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