Fenuron is primarily used as a selective herbicide in agriculture. It controls the growth of broadleaf weeds and grasses in crops such as cotton, potatoes, and certain fruit orchards. It works by inhibiting photosynthesis in susceptible plants, leading to their gradual death. Fenuron is applied pre-emergence, meaning it is used before weeds appear, to prevent seed germination and early growth. Due to its persistence in soil, it provides long-lasting weed control but requires careful management to avoid carryover effects in rotational crops. It is also used in non-agricultural areas for vegetation control on industrial sites and along transportation routes.