Officer is a post-emergence herbicide manufactured by Coromandel International.1 It's a unique product because it contains two active ingredients: Bispyribac Sodium 20% and Pyrazosulfuron Ethyl 15% WDG.2 This combination makes it a powerful tool for controlling a broad spectrum of weeds in rice paddy fields.3
Key Features and Benefits:
Dual action: The two active ingredients work synergistically to provide effective control of a wide range of grasses, broadleaf weeds, and sedges.4
Systemic activity: Absorbed through both the foliage and roots, ensuring thorough translocation throughout the weed.5
Post-emergence control: Applied after weeds have emerged, offering flexibility in application timing.6
Unique application window: Can be effectively applied even at the 1-3 leaf stage of weeds.7
Low dosage: Requires a relatively low dosage per acre compared to some other herbicides.8
Season-long control: Provides extended weed suppression, minimizing competition during the critical crop growth period.9
Safe for rice: Designed to be safe for rice plants when used according to the label instructions.10
Mode of Action:
Both active ingredients in Officer belong to the Sulfonylurea family of herbicides.11 They work by inhibiting Acetolactate Synthase (ALS), an enzyme essential for the production of branched-chain amino acids in plants.12 This disruption leads to the inhibition of protein synthesis and ultimately causes the death of susceptible weeds.
Application:
Officer is typically applied when weeds are at the 1-3 leaf stage.13 It's crucial to ensure good coverage for optimal efficacy. Always follow the recommended application rates and guidelines provided on the product label.
Targeted Weeds:
Officer provides effective control of key weeds in rice, including:
Grasses (e.g., Echinochloa spp.)14
Broadleaf weeds (e.g., Monochoria vaginalis, Ludwigia spp.)15
Sedges (e.g., Cyperus spp.)16
Safety Precautions:
Always wear appropriate personal protective equipment (PPE) when handling and applying Officer.
Avoid contact with skin, eyes, and clothing.
Do not inhale the spray mist.
Keep out of reach of children and animals.
Store in a cool, dry place away from direct sunlight and heat.
Additional Information:
Category: Sulfonylurea herbicide17
Manufacturer: Coromandel International18
Formulation: Water Dispersible Granules (WDG)19
Disclaimer:
This information is intended for general knowledge and informational purposes only. Always consult the product label and local agricultural experts for specific recommendations and guidelines before using any pesticide product.
