Syngenta Fusiflex Herbicide: Complete Guide, Price & Dosage
Master weed control in Soybean and Groundnut with this dual-action herbicide.
Important Clarification: There is a common error online listing Fusiflex as an insecticide containing "Flubendiamide." This is incorrect. Syngenta Fusiflex is a specialized post-emergence herbicide designed to kill grasses and broadleaf weeds. It does not control caterpillars or insects.
Fusiflex combines two powerful active ingredients—Fluazifop-p-butyl and Fomesafen—to provide a "double-tap" solution that clears your field of tough weeds, saving you labor costs and protecting your yield.
Why Choose This Product? Key Benefits
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Dual-Action Power: Controls both grassy weeds (Monocots) and broadleaf weeds (Dicots) in a single spray.
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Safe for Crops: Highly selective formulation that is safe for Soybean and Groundnut (Peanut) when used as directed.
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Cost Efficient: Reduces weeding costs by over 60% compared to manual labor, which is expensive and hard to find.
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Quick Rainfastness: Becomes effective within 1-2 hours of application, making it ideal for use during the monsoon season.
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Systemic & Contact Action: Attacks weeds at the root (systemic) and burns foliage (contact) for complete elimination.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Syngenta Fusiflex |
| Technical Name | Fluazifop-p-butyl 11.1% + Fomesafen 11.1% SL |
| IRAC MoA Code | Group 1 (ACCase Inhibitor) + Group 14 (PPO Inhibitor) |
| Chemical Group | Aryloxyphenoxypropionate + Diphenylether |
| Formulation | Soluble Liquid (SL) / EC Premix |
| Toxicity Label | Blue Triangle (Moderate Toxicity) |
How It Works: Mode of Action
Fusiflex uses a unique dual strategy to overcome weed resistance and ensure total control.
- Stops Lipid Production (Fluazifop): Quickly penetrates grass leaves and moves to the roots. It inhibits the ACCase enzyme, stopping lipid production and halting growth within 48 hours.
- Cell Membrane Disruption (Fomesafen): Acts on broadleaf weeds by inhibiting the PPO enzyme. Sunlight triggers a reaction that destroys cell membranes, causing rapid "burn-down" and drying of the weed.
- Complete Death: The combination ensures that the weed's growing point rots while the leaves dry out, preventing regrowth.
Note: Legume crops like Soybean have natural enzymes to detoxify the chemical, keeping them safe.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Soybean | Barnyard Grass, Crabgrass, Commelina (Benghal Dayflower), Digera arvensis |
| Groundnut (Peanut) | Jungle Rice, Goosegrass, False Amaranth, Crowfoot Grass |
| Cotton (Selective) | Specific mixed weed flora (Use with caution and consult an agronomist) |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (ml / Acre) | Water (L / Acre) | Dose (ml / Litre) | PHI (Days) |
|---|---|---|---|---|
| Soybean | 400 - 500 ml | 200 Litres | 2 - 2.5 ml | 14 Days |
| Groundnut | 400 - 500 ml | 200 Litres | 2 - 2.5 ml | 56 Days |
| General Application | 400 ml | 200 Litres | 2 ml | - |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting. Note the long PHI for Groundnut (56 days).
How to Apply: Best Practices
- Timing: Apply strictly when weeds are at the 3 to 4 leaf stage (usually 15-25 days after sowing). Late application leads to poor results.
- Mixing: Use a Flat Fan or Flood Jet nozzle. Ensure you use 200 Litres of water per acre. Low water volume (e.g., using drones) may fail because Fomesafen needs to cover the leaves thoroughly.
- Coverage: Do not spray if rain is expected within 1 hour. A dry period of 2-6 hours is ideal.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use.
Frequently Asked Questions
1. Is Fusiflex an insecticide or herbicide?
It is a Herbicide (weed killer). Some online stores incorrectly list it as an insecticide (Flubendiamide), but that is a data error. Fusiflex will NOT kill bollworms or stem borers.
2. Will it damage my Soybean or Groundnut crop?
No, it is safe for these crops. You might see slight "bronzing" or speckling on the leaves after spraying, but the crop recovers quickly with no yield loss.
3. Can I use it on Cotton?
While possible, Cotton is more sensitive than legumes. Consult a local agronomist before spraying Fusiflex on cotton to avoid crop shock.
4. Can I mix other chemicals with Fusiflex?
It is best to apply Fusiflex alone. Mixing with other insecticides or fungicides can reduce efficacy or increase crop burn (phytotoxicity).
5. What happens if I spray when weeds are big?
If weeds have more than 5 leaves, Fusiflex may only burn the top leaves ("pruning effect") and the weed might regrow. Always spray at the 3-4 leaf stage.
Safety & Disclaimer
Always read and follow the instructions on the official product label. The information provided here is for guidance only. Use personal protective equipment (PPE) during application. Pay special attention to the 56-day pre-harvest interval for groundnuts to avoid residues.
