What is one of the most common methods of managing aquatic plants?

The use of herbicides is one of the most common methods of managing aquatic plants due to its effectiveness and efficiency in controlling unwanted vegetation. Herbicides can target specific aquatic plants, allowing for the reduction or elimination of species that may disrupt the ecosystem or hinder recreational activities such as swimming, fishing, or boating.

This chemical method provides a means of management that can cover large areas more quickly and comprehensively compared to manual methods, which may be labor-intensive and less practical for extensive infestations. Additionally, when used correctly and in accordance with regulations, aquatic herbicides can be safe for the surrounding ecosystem and help maintain a balanced aquatic environment.

The other options, while they may play a role in plant management, do not have the same level of wide applicability or effectiveness when it comes to significant infestations, making herbicide use a prevalent and practical choice.