Fomesafen

Type: Herbicide

Mode of Action: 

• Group 14: PPO inhibitors

Common Product Names: FlexStar & Warrant

What is it?

Fomesafen is a selective herbicide primarily used to control broadleaf weeds and grasses in various crops, including soybeans, cotton, and peanuts. It is applied as a post-emergent herbicide, meaning it is used after the weeds have emerged from the soil. Fomesafen is known for its effectiveness against a wide range of tough-to-control weeds and its ability to provide long-lasting residual control.

How does it work?

Fomesafen works by disrupting the normal function of weed cell membranes. By inhibiting the PPO enzyme, it causes the accumulation of toxic intermediates that damage cell membranes. This process leads to the rapid death of the weed. Visible effects, such as yellowing and wilting of the leaves, can often be seen within a few days of application.

Benefits

• Residual Control: Provides long-lasting control of weeds, reducing the need for multiple applications throughout the growing season.
• Post-Emergent Application: Allows for flexibility in weed management, as it can be applied after weeds have emerged.
• Fast-Acting: Visible results are typically seen within a few days, ensuring rapid control of unwanted weeds.