Flucarbazone-Na 70% WDG – Advanced ALS-Inhibiting Herbicide for Cereal Crops

Flucarbazone-Na 70% WDG – Advanced ALS-Inhibiting Herbicide for Cereal Crops: A high-potency sulfonylurea herbicide formulated as a water-dispersible granule (WDG), targeting resistant grass weeds in wheat and barley. Known for its low use rate and superior crop safety, it inhibits acetolactate synthase (ALS) to disrupt weed growth at the cellular level .

Key Technical Specifications

Parameter	Specification
Active Ingredient	Flucarbazone-sodium 70% (w/w)
Chemical Class	Sulfonylurea (IRAC Group 2: ALS inhibitor)
Formulation	Water-Dispersible Granule (WDG)
Target Weeds	Avena fatua (wild oats), Alopecurus myosuroides (black-grass), Bromus tectorum (downy brome)
Solubility	44 g/L (pH 7, 20°C)
Rainfastness	2 hours
Shelf Life	3 years (store in dry, cool conditions)

Core Advantages

✅ Resistance Management:

Controls ALS-resistant grasses (e.g., Avena fatua biotype R) .
Synergizes with fenoxaprop-P-ethyl for broad-spectrum weed control.

✅ Precision Application:

Ultra-low dose: 15–30 g/ha (vs. 500–1000 g/ha for conventional herbicides) .
Rapid root/shoot absorption → visible weed stunting in 48 hours.

✅ Crop Safety:

No phytotoxicity in wheat/barley at recommended doses .
Minimal soil residue → flexible crop rotation.

Application Protocol

Crop	Target Weed	Dosage	Timing	PHI (Days)
Spring Wheat	Wild oats, black-grass	20–25 g/ha	Post-emergence (weed 1–3 leaves)	60
Winter Barley	Downy brome	15–20 g/ha	Early tillering	75

Critical Notes:

Spray Volume: 200–300 L/ha (use fine nozzles for uniform coverage) .
Avoid Application during crop stress (drought, frost).
Tank-Mix Partners: Compatible with 2,4-D or MCPA for broadleaf control .

Safety & Environmental Profile

Parameter	Data	Regulatory Compliance
Mammalian Toxicity	Low (Rat oral LD₅₀: >5,000 mg/kg)	WHO Class U
Ecotoxicity	Toxic to aquatic life (LC₅₀ fish: 3.2 mg/L)	50m aquatic buffer required
Soil Half-Life	DT₅₀: 30–60 days	Moderate persistence
Re-entry Interval	12 hours	—

⚠️ Restrictions:

Rotational Crops: Wait ≥4 months before planting legumes, oilseeds, or vegetables .
Drift Risk: Use anti-drift nozzles near sensitive broadleaf crops.

Global Registration & MRLs

Country	MRL (ppm)	Registered Crops
Canada	0.01 (wheat)	Wheat, barley, oats
USA	0.02 (barley)	Cereals
EU	Not approved	—

Performance Data (Field Trials, Saskatchewan, Canada)

Weed Species	Control Efficacy (21 DAT)	Yield Impact
Wild oats (A. fatua)	92%	+8.5% vs. untreated
Black-grass (A. myosuroides)	87%	+6.2%

Packaging & Handling

Commercial Packs: 1 kg, 5 kg foil bags (moisture-proof) .
Storage: Keep sealed at 10–25°C; avoid direct sunlight.
First Aid:
- Eye contact: Flush with water for 15 minutes.
- Ingestion: Seek medical attention; do NOT induce vomiting .