Classification:
Herbicide
Formulation:
Cyhalofop-butyl 150g/L + Bispyribac-sodium 50g/L OD (Oil Dispersion)
CAS NO:
Cyhalofop-butyl: 122008-85-9
Bispyribac-sodium: 125401-92-5
USAGE:
Post-emergence herbicide for synergistic control of grasses and broadleaf weeds
in rice paddies. Highly effective against Echinochloa crus-galli
(barnyardgrass), Leptochloa chinensis, Cyperus difformis, and other resistant
weeds in transplanted and direct-seeded rice.
Pack size:
500mL, 1L, 5L, 20L/drum, or as required
| Crop | Target Weeds | Dosage | Application Timing | Remarks |
|---|---|---|---|---|
| Transplanted Rice | Echinochloa spp., Leptochloa | 600-800 mL/ha | 2-4 weeks after transplanting | 1) Maintain 3-5 cm water layer 2) REI: 48 hrs |
| Direct-seeded Rice | Cyperus, Monochoria | 500-700 mL/ha | Weeds 2-4 leaf stage | PHI: 60 days |
| Rice (Resistant weeds) | ALS-resistant grasses | 800-1000 mL/ha | Early infestation | Add surfactant (0.2% v/v) |
Mode of Action:
-Cyhalofop-butyl : ACCase inhibitor (Group 1)
-Bispyribac-sodium : ALS inhibitor (Group 2)
-Dual-site action prevents resistance development
-Systemic translocation to roots and shoots
Benefits:
-Broad-spectrum control of grasses/sedges
-Effective against herbicide-resistant biotypes
-Rapid absorption (rainfast in 4-6 hours)
-Low phytotoxicity to rice at recommended doses
Precautions:
-PPE: Coveralls, nitrile gloves, face shield
-Do not drain treated water to fish ponds
-Avoid application at temperatures >35°C
-Storage: Keep in original container at 0-35°C
Environmental Hazards:
-Highly toxic to aquatic plants
-Moderate toxicity to fish (LC50 2.4 mg/L)
-Soil half-life: Cyhalofop (3-20 days), Bispyribac (7-40 days)
-Do not apply near irrigation channels