Diquat dibromide is widely used as a herbicide to control aquatic weeds and broadleaf weeds in various agricultural and non-agricultural settings. It is particularly effective in managing vegetation in water bodies such as ponds, lakes, and irrigation canals, where it helps to prevent the overgrowth of plants that can disrupt water flow and ecosystem balance. In agriculture, it is applied to crops like potatoes and legumes to desiccate plants before harvest, facilitating easier and more efficient crop collection. Additionally, it is used in non-crop areas such as industrial sites, roadsides, and railways to maintain clear and weed-free zones. Its fast-acting nature makes it a preferred choice for quick vegetation control, though it requires careful handling to minimize environmental impact.