Which factor is NOT typically considered when selecting an aquatic herbicide?

When selecting an aquatic herbicide, the primary factors to consider include the type of plant to be controlled, the potential environmental impact, and the specific characteristics of the site where the herbicide will be applied. Each of these aspects plays a significant role in determining the most effective and responsible course of action for managing aquatic vegetation.

The type of plant to be controlled is essential because different herbicides target specific species, so knowing which plant you are dealing with helps in choosing the correct product. Environmental impact is equally important, as it ensures that the herbicide application does not adversely affect non-target organisms, water quality, or the ecosystem as a whole. Site characteristics, such as water flow, depth, and the presence of sensitive habitats, further influence the choice of herbicide and application method to achieve effective control while minimizing risks.

In contrast, the availability of local fishing licenses is not a relevant factor in the selection of an aquatic herbicide. While fishing regulations and local permits are important for compliance and sustainability in aquatic ecosystems, they do not influence the efficacy or safety of specific herbicides. Thus, this option is not typically considered during the herbicide selection process.