Trifluralin

A pre-emergence herbicide used to control annual grasses and broadleaf weeds

Trifluralin is a widely used herbicide that is applied to control annual grasses and broadleaf weeds. It is primarily used in agriculture to protect crops such as cotton, soybeans, and vegetables. Trifluralin is known for its effectiveness as a pre-emergence herbicide, meaning it is applied to the soil before the weeds germinate.

Chemical properties

Trifluralin is a member of the dinitroaniline class of herbicides. Its chemical formula is C₁₃H₁₆F₃N₃O₄. It is a yellow-orange crystalline solid with a melting point of 48°C. The compound is relatively insoluble in water but soluble in organic solvents.

Mode of action

Trifluralin works by inhibiting cell division in the roots of germinating seeds. It disrupts the formation of microtubules, which are essential for cell division, thereby preventing the growth of the weed seedlings. This mode of action makes it effective against a wide range of weed species.

Usage

Trifluralin is applied to the soil surface and incorporated into the top layer of soil to ensure effective weed control. It is often used in combination with other herbicides to broaden the spectrum of weed control. The application rates and timing depend on the specific crop and weed species being targeted.

Environmental impact

Trifluralin is considered to have a low potential for leaching into groundwater due to its low solubility in water and strong adsorption to soil particles. However, it can persist in the environment and may pose risks to aquatic organisms if it enters water bodies through runoff. Proper management practices are recommended to minimize environmental impact.

Regulation and safety

Trifluralin is registered for use in many countries, but its use is subject to regulation to ensure safety for humans and the environment. Users are advised to follow label instructions and safety guidelines to minimize exposure risks.

Related pages

• Herbicide
• Weed control
• Agriculture

References

• "Trifluralin." National Pesticide Information Center. Retrieved from [1]
• "Trifluralin." PubChem. Retrieved from [2]

Trifluralin crystals