Coreon Herbicide
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Coreon Herbicide by Corteva (Penoxsulam + Butachlor)
The Ultimate Broad-Spectrum Weed Control Solution for Transplanted Rice
Coreon Herbicide is a specialized, high-performance solution designed by Corteva Agriscience to protect your paddy fields during the most critical early stages. It combines two powerful active ingredients—Penoxsulam and Butachlor—to eliminate weeds before they can steal nutrients from your crop.
Unlike traditional weedkillers that must be used within 3 days, Coreon offers a flexible "0 to 7 Day" window after transplanting. Whether you are dealing with tough grasses, sedges, or broadleaf weeds, Coreon provides a "Dual-Action" shield that stops weed growth instantly.
Why Choose This Product? Key Benefits
- ⏱️Flexible Timing (0-7 Days): You have up to one week after transplanting to apply, giving you a wider safety window than standard pre-emergence herbicides.
- ?️Dual-Action Power: Combines two powerful chemistries to kill weeds that are resistant to other common herbicides.
- ⏳Long-Lasting Control: Prevents weed regrowth for weeks, covering the critical period when your crop needs nutrients the most.
- ?️Rainfast in 2 Hours: Perfect for the monsoon season; once dry (approx. 2 hours), rain will not wash it away.
- ?Complete Spectrum: Kills all three types of weeds—Grasses, Sedges, and Broadleaf weeds—in a single shot.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Coreon Herbicide |
| Technical Name | Penoxsulam 0.97% + Butachlor 38.8% w/w SE |
| IRAC MoA Code | Group 2 (ALS Inhibitor) + Group 15 (VLCFA Inhibitor) |
| Chemical Group | Triazolopyrimidine Sulfonamide + Chloroacetanilide |
| Formulation | Suspension Emulsion (SE) - Liquid |
| Toxicity Label | Blue Triangle (Moderately Toxic) |
How It Works: Mode of Action
Coreon uses a unique "Double Attack" strategy to ensure no weed survives. It enters the plant through leaves, stems, and roots.
- Starvation (Penoxsulam): It blocks the production of essential proteins (amino acids), causing the weed to stop growing immediately.
- Growth Stop (Butachlor): It prevents cell division, meaning new weed shoots cannot emerge from the soil.
- Systemic Flow: The chemical travels inside the weed (systemic action) to kill it from the inside out, handling both surface weeds and deep roots.
This combination is highly effective against tough weeds like Barnyard grass and Sedges that often survive other treatments.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Transplanted Rice (Paddy) | Barnyard Grass (Echinochloa crus-galli) |
| Transplanted Rice (Paddy) | Rice Flatsedge & Umbrella Sedge (Cyperus spp.) |
| Transplanted Rice (Paddy) | Broadleaf Weeds (Ludwigia, Marsilea) |
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) |
|---|---|---|---|---|
| Transplanted Rice | 800 - 900 ml | 120 - 200 Litres | 4 - 6 ml | 90+ Days |
| (Sand Mix Method) | 800 ml | N/A (Mix with 20-25kg Sand) | N/A | 90+ Days |
*PHI = Pre-Harvest Interval: Since this is applied very early (0-7 days), the residue is gone well before harvest.
How to Apply: Best Practices
[Image of farmer spraying herbicide in paddy field]- Timing: Apply strictly between 0 to 7 days after transplanting. Effectiveness drops if delayed beyond 7 days.
- Mixing (Sand Method): You can mix the 800ml bottle with 20-25 kg of dry sand or fertilizer and broadcast it uniformly over the field. This saves labor.
- Mixing (Spray Method): If spraying, use a Flat Fan or Flood Jet nozzle for uniform coverage on the soil surface.
- Water Management: Maintain standing water (3-5 cm depth) in the field for 4 to 5 days after application. This "locks" the herbicide in place.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use.
Frequently Asked Questions
1. Can I use Coreon after 7 days of transplanting?
It is not recommended. Coreon works best on very small weeds. If you wait longer than 7 days, the grass weeds may become too big for the Butachlor component to kill effectively.
2. Does Coreon control Sedge weeds?
Yes! The Penoxsulam component in Coreon is excellent for controlling sedges like Rice Flatsedge (Cyperus iria) and Umbrella Sedge, which often escape other herbicides.
3. Is it safe for fish in the paddy field?
No. Like most herbicides, it is toxic to aquatic organisms. Do not use in fields where you are actively farming fish, and do not drain treated water directly into fish ponds.
4. Can I mix Coreon with Urea or Fertilizer?
Yes, Coreon is compatible with the "Sand Mix" or fertilizer broadcasting method. Ensure it is mixed thoroughly for even distribution.
5. What if it rains after application?
Coreon is rainfast in about 2 hours. If it rains after this time, the product remains effective. Light rain can actually help the product settle into the soil.
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.
