Classification:
Herbicide
Formulation:
Cyhalofop-butyl 200g/L OD (Oil Dispersion)
CAS NO:
122008-85-9
USAGE:
Selective post-emergence herbicide for controlling annual and perennial grasses
in rice (including direct-seeded, transplanted, and hybrid varieties). Highly
effective against Echinochloa crus-galli (barnyard grass), Leptochloa chinensis,
and other resistant grass weeds.
Pack size:
500mL, 1L, 5L, 20L/drum, or as required
Crop | Target Weeds | Dosage (200g/L OD) | Application Timing | Remarks |
---|---|---|---|---|
Direct-seeded Rice | Echinochloa spp., Leptochloa | 750-1000 mL/ha | Weeds 2-4 leaf stage | 1) REI: 48 hrs 2) Maintain 3-5 cm water layer |
Transplanted Rice | Barnyard grass | 600-800 mL/ha | 7-15 days after transplanting | Apply to drained field, re-flood after 24h |
Hybrid Rice | Resistant grasses | 800-1200 mL/ha | Weeds 10-15 cm height | PHI: 60 days |
Wet-seeded Rice | Complex grass weeds | 900-1200 mL/ha | Before weed tillering | Add methylated seed oil (1% v/v) |
Mode of Action:
-ACCase inhibitor (Group 1 herbicide)
-Rapid absorption through foliage
-Translocation to meristematic tissues
-Visible symptoms within 3-7 days
Benefits:
-Excellent rice crop safety
-Controls quinclorac-resistant grasses
-Rainfast within 2 hours
-Low volatility formulation
-Compatible with common rice herbicides
Precautions:
-PPE: Coveralls, nitrile gloves, face shield
-Do not apply when temperature exceeds 35°C
-Avoid application to water-stressed crops
-Storage: Keep in original container at 0°C to 35°C
-Shelf life: 2 years from manufacture date
Environmental Hazards:
-Highly toxic to aquatic plants
-Do not apply directly to water bodies
-Moderate toxicity to fish (LC50 3.2 mg/L)
-Soil half-life: 5-15 days (aerobic conditions)
-Non-persistent in water (DT50 <1 day)