Pyroxasulfone

Type: Herbicide

Mode of Action: 

• Group 15: Very long-chain fatty acid (VLCFA) synthesis inhibitors

Common Product Names: Anthem, Fierce, Zidua

What is it?

Pyroxasulfone is a pre-emergent herbicide, which means it is applied to the soil to control weeds before they emerge from the ground. It is widely used in agricultural settings, particularly for crops such as corn, soybeans, wheat, and sunflowers. Pyroxasulfone is known for its excellent control of key problem weeds, such as foxtail, barnyardgrass, and waterhemp, making it a valuable tool for farmers seeking to maintain high crop yields.

How does it work?

When applied to the soil, pyroxasulfone forms a protective barrier on the soil surface. As weed seeds germinate and begin to grow, they absorb the herbicide, which inhibits their cell membrane formation. This inhibition prevents the seedlings from establishing, leading to their death before they can emerge above the soil surface. Pyroxasulfone is highly effective in controlling both annual grasses and broadleaf weeds, providing long-lasting weed control through its residual activity.

Benefits

• Residual Activity: It provides long-lasting control, reducing the need for repeated applications and thus saving time and labor for farmers.
• Pre-Emergent Efficiency: By targeting weeds before they emerge, pyroxasulfone helps maintain cleaner fields and reduces competition for crops, leading to potentially higher yields.
• Resistance Management: Its unique mode of action helps in managing herbicide resistance, making it a valuable tool in integrated weed management programs.