Used as a selective pre-emergence herbicide primarily in rice, corn, and small grain crops to control annual grasses and some broadleaf weeds. It is applied to soil before weed seeds germinate, where it inhibits root and shoot development in susceptible species. Due to its soil-binding properties, it remains effective with minimal leaching. Commonly used in combination with other herbicides for broader weed control. Requires careful handling to avoid crop damage and environmental contamination.