Fluridone is primarily used as an aquatic herbicide to manage and control invasive and nuisance aquatic plants in lakes, ponds, reservoirs, and irrigation canals. It is effective against a wide range of submerged and floating weeds, such as hydrilla, Eurasian watermilfoil, and duckweed. By inhibiting carotenoid biosynthesis, it disrupts photosynthesis, leading to the gradual death of targeted plants. Its slow-acting nature minimizes oxygen depletion in water bodies, reducing the risk of fish kills. Fluridone is also applied in agricultural settings to control weeds in rice fields, ensuring better crop yields. Its selective action makes it suitable for use in diverse aquatic ecosystems while minimizing harm to non-target species.