What is meant by "bottom treatments" in aquatic pest control?

"Bottom treatments" in aquatic pest control refer to the technique of injecting herbicides directly into the sediments at the bottom of a water body. This approach targets the root systems of aquatic plants more effectively by delivering the herbicide where it can be absorbed directly by the plants. By reaching the plant’s root zone, bottom treatments can provide a more effective control of invasive species, leading to improved management of aquatic environments.

Injecting herbicides through pipes allows for targeted applications that minimize the chemical's exposure to non-target species and reduces the risk of off-target drift that can occur with surface applications. This method is particularly useful in controlling species that are anchored to the substrate and may not be effectively impacted by surface treatments, where the herbicide may not reach their root systems effectively.

This understanding is crucial for professionals in aquatic pest control to ensure effective implementation of management practices that not only target undesirable species but also protect desirable aquatic life and the overall health of water ecosystems.