Flumioxazin 480g/L SC Herbicide – Advanced PPO Inhibitor for Broad-Spectrum Weed Control

Flumioxazin 480g/L SC is a high-concentration suspension concentrate formulation of the protoporphyrinogen oxidase (PPO) inhibitor flumioxazin. Designed for pre-emergent weed management, it disrupts chlorophyll synthesis in susceptible weeds upon activation by sunlight, causing rapid desiccation (within 2–4 hours) and complete kill in 24–72 hours. Ideal for field crops (soybeans, peanuts), orchards, and non-crop areas, it combines extended soil residual activity (DT₅₀: 14–30 days) with low use rates (50–100 g a.i./ha)

Technical Specifications

Parameter	Specification
Active Ingredient	Flumioxazin 480 g/L (48% w/v)
Chemical Class	N-phenylimide (HRAC Group 14)
Formulation Type	Suspension Concentrate (SC)
Target Weeds	Broadleaves (Amaranthus, Chenopodium), grasses (Digitaria), sedges
Solubility	Low water solubility (1.8 mg/L); stable in hard water
Rainfastness	1 hour
Shelf Life	2 years (10–25°C; avoid freezing)

Key Features & Benefits

✅ Rapid Burndown:

Visible necrosis within 2–4 hours of sunlight exposure; complete weed death in 24–72 hours.
✅ Broad-Spectrum Control:
Suppresses >30 species, including glyphosate-resistant Amaranthus palmeri and Conyza canadensis.
✅ Soil Residual Activity:
Maintains efficacy for 4–6 weeks, preventing new germinations.
✅ Crop Safety:
Selective for soybeans, peanuts, and tree nuts when applied pre-emergence.

Application Guidelines

Crop/Area	Dosage (L/ha)	Target Weeds	Timing
Soybeans	0.1–0.2	Pigweed, crabgrass	Pre-emergence (within 3 days of planting)
Orchards	0.15–0.25	Chenopodium, Setaria	Dormant season or early spring
Non-Crop Areas	0.2–0.3	Broadleaf invasives	Pre-emergence of weeds

Critical Practices:

Activation: Requires 5–10 mm rainfall/irrigation within 7 days 1.
Spray Volume: 200–300 L/ha (use coarse nozzles to minimize drift).
Tank-Mix Partners: Compatible with glyphosate (burndown) or pendimethalin (extended residual).

⚠️ Safety & Environmental Profile

Parameter	Data	Regulatory Notes
Mammalian Toxicity	Low (Rat oral LD₅₀: >5,000 mg/kg)	WHO Class U
Ecotoxicity	Highly toxic to fish (LC₅₀: 0.12 mg/L)	50m aquatic buffer required
Soil Binding	Koc: 1,200–2,000 (low leaching risk)	GUS index: 1.8 (low potential)
Re-entry Interval	12 hours	PPE: Gloves, goggles, respirator

Precautions:
⚠️ Avoid Foliar Contact: Direct spray causes phytotoxicity in broadleaf crops.
⚠️ Rotational Restrictions: Wait 120 days before planting legumes or leafy vegetables.

Advantages Over Alternatives

Feature	Flumioxazin 480g/L SC	Standard EC Formulations
Phytotoxicity Risk	Low (SC reduces crop injury)	Moderate to high
Tank-Mix Stability	Excellent (no separation)	Variable
Resistance Management	Effective against ALS/glyphosate-resistant weeds	Limited efficacy

Global Registration & MRLs

USA: EPA Reg. No. 7969-345 (soybeans, tree nuts).
Canada: PMRA-approved (field crops, MRL 0.05 ppm for soybeans).
MRL Compliance:
- Soybean: 0.01 ppm (USA), 0.05 ppm (Japan)
- Peanuts: 0.10 ppm (EU).

Packaging & Handling

Commercial Sizes: 1L, 5L, 20L COEX jugs.
Storage: Keep at 5–30°C; avoid prolonged exposure to >40°C.
First Aid:
- Skin contact: Wash with soap/water for 15 minutes.
- Eye exposure: Rinse immediately with water.