Cefey 642 WG

Synergy against weeds: why Cephei 642 WG is effective

When protecting corn crops, the main challenge for an agronomist is controlling both annual and stubborn perennial dicot weeds. The Dutch preparation Cephei 642 WG from F. Simonis B.V. Barneveld solves this task through a clever combination of two active ingredients: Dicamba and Rimsulfuron.

Unlike mono-component herbicides, this formulation provides a double punch. Rimsulfuron quickly blocks cell division in weeds, while Dicamba triggers rapid growth that leads to plant collapse. This allows not just for "scorching" the tops, but for destroying the plant entirely, including the root system, which is crucial for fighting Canada thistle or field bindweed.

Key advantages of application

• Systemic activity: The preparation penetrates the plant through the leaves and is quickly transported through the vascular system, ensuring reliable results even under adverse weather conditions.
• Selectivity: Cephei 642 WG is a selective herbicide. It is maximally safe for corn because the crop can rapidly metabolize the active ingredients, while the weeds perish.
• Convenient formulation: Water-dispersible granules dissolve easily, do not create dust when added to the tank, and ensure a stable working solution that covers the leaf surface evenly.

Things to keep in mind

Like any post-emergence herbicide, Cephei 642 WG requires attention to the corn's growth stage. The optimal application window is between the 2-leaf and 5-leaf stage. It is important to remember that this is a powerful tool, so the maximum number of treatments is limited to one per season. The requirements for the rate (over 3.0 L/ha of working solution) are driven by the need for thorough coverage of the weed foliage to achieve maximum efficiency.

This preparation is an optimal solution for large-scale farms where it is critical to minimize weed competition during early development stages, preventing yield losses before canopy closure.