Used primarily as a selective herbicide to control aquatic weeds and invasive plant species in lakes, ponds, and irrigation systems. It inhibits carotenoid biosynthesis in plants, leading to the breakdown of chlorophyll and ultimately preventing photosynthesis. Commonly applied to manage nuisance vegetation such as hydrilla and Eurasian watermilfoil without significantly affecting surrounding grasses or crops. Also used in agriculture to regulate plant growth and in research settings to study pigment formation in plants. Its systemic action allows it to be effective at low concentrations, making it suitable for large-scale water management programs.