Which herbicide formulation typically has the least risk of drift?

Granular herbicides typically have the least risk of drift due to their physical form and application method. Unlike liquid or aerosol formulations, which can easily become airborne and be carried by wind, granular products remain on the ground after application. This minimizes the likelihood of off-target movement because they are applied as solid particles that stick to the soil surface.

The use of granular formulations is especially beneficial in areas where drift is a significant concern, such as near sensitive crops, water bodies, or residential areas. Their targeted application means they are less susceptible to environmental factors, further reducing the risk of unintended herbicide dispersion.

In comparison, other formulations, like liquid herbicides and aerosols, are more prone to volatilization and wind drift, which can lead to contamination of non-target areas. Emulsifiable concentrates also present drift risks due to their thin, liquid nature that can form fine droplets. Understanding these differences is critical for safe and effective herbicide application in right-of-way management.