Coreon - Butachlor 38.83% + Penoxsulam 0.97% SE - Corteva Agriscience

Corteva Coreon Rice Herbicide: Product Overview

Corteva Coreon is a systemic, broad-spectrum pre-emergence herbicide developed for weed management in transplanted rice. It combines Butachlor 38.83% with Penoxsulam 0.97%. The current Government registered-use table describes the corresponding formulation as Penoxsulam 0.97% w/w + Butachlor 38.8% w/w SE; this small decimal difference reflects the way the formulation is stated across official records. Check the current product pack before use.

Coreon is intended for label-listed grasses, sedges and broadleaf weeds during the early crop-establishment period. Corteva states an application window of 0-7 days after transplanting. Use only in the crop, dose, water volume and timing stated on the current Indian label.

Why Choose Coreon?

• Broad weed spectrum: Official sources support control of specified grassy weeds, sedges and broadleaf weeds in transplanted rice.
• Two modes of action: Penoxsulam and Butachlor act at different herbicide target sites.
• Flexible early window: Corteva lists use from 0 to 7 days after transplanting.
• Residual early-season activity: The formulation is positioned for weed control during the critical establishment stage when used as directed.

Technical Specifications

How It Works

Penoxsulam is an HRAC/WSSA Group 2 herbicide that inhibits acetolactate synthase, interrupting production of branched-chain amino acids needed for weed growth. Butachlor is an HRAC/WSSA Group 15 herbicide that inhibits very-long-chain fatty-acid synthesis and cell development in susceptible emerging weeds. The two active ingredients therefore contribute different target-site activity within one formulation.

This classification supports resistance-awareness, but it does not guarantee control of resistant weeds. Follow the label and use integrated weed-management practices suited to the field.

Registered Crop & Target Weeds

Dosage & Application Guide

The Government registered-use table lists 2,000 ml/ha; Corteva's current product page displays a general recommendation of 2,000-2,250 ml/ha. The current pack label is the final authority for the exact rate and method. Do not create a per-litre dose using a different spray-water volume.

Application & Safety Practices

• Use only in transplanted rice and only during the label-approved early application window.
• Calibrate application equipment and obtain even field coverage using the stated water volume.
• Do not tank mix, broadcast with fertilizer or transfer another product's directions unless the current Coreon label expressly permits it.
• Wear the personal protective equipment required on the pack label. Avoid contact with eyes, skin and clothing, and avoid breathing mist.
• Store tightly closed in the original container, in a dry place away from food, feed, medicines and potable water.
• Prevent spray, wash water and containers from contaminating ponds, waterways or aquaculture areas.

Frequently Asked Questions

1. Which crop is Coreon registered for?
Use is supported for transplanted rice. Do not extend the directions to direct-seeded rice or another crop without a current label authorization.

2. When should Coreon be applied?
Corteva states 0-7 days after transplanting. Match field conditions and application method to the current pack label.

3. What types of weeds does it target?
The registered row covers specified grasses, sedges and broadleaf weeds, including Echinochloa, Cyperus, Marsilea and Alternanthera species.

4. What are its herbicide groups?
Penoxsulam is Group 2 and Butachlor is Group 15 under the HRAC/WSSA system.

5. Can Coreon be mixed with another input?
Do not assume compatibility. Mix or co-apply only when the current label explicitly allows it or an authorised agronomist confirms the label-supported practice.

Safety & Disclaimer

Always read and follow the current official product label and leaflet. Agricultural conditions, weed stage and local restrictions can change the correct use. This page is a source-based product summary and does not replace label directions or professional agronomic advice.