Which of the following chemicals is a registered active ingredient in Florida for aquatic use?

Diquat is an active ingredient that is registered for aquatic use in Florida, making it suitable for managing various types of aquatic weeds. This chemical is a fast-acting herbicide that targets aquatic plants, disrupting their ability to photosynthesize and ultimately leading to their demise. It is particularly effective in controlling a wide range of submerged and floating aquatic weeds, which is essential for maintaining healthy water bodies.

The other chemicals listed do have specific uses but are not registered for aquatic applications in Florida. For instance, xylene is primarily used as a solvent and does not have specific registrations for aquatic use. Glyphosate is widely known for its effectiveness as a broad-spectrum herbicide, but its registration for aquatic use is limited and often subject to specific conditions. Chlorpyrifos, an insecticide, has restrictions regarding its use in aquatic environments due to its potential impact on non-target species and wider ecological consequences. Thus, the focused use and appropriate registration of diquat make it a valuable tool in aquatic weed management in Florida.