What are the four zones in a body of water to which pesticide can be applied?

The correct answer identifies the four zones in a body of water where pesticide application is appropriate: surface, total volume, bottom layer, and canal/ditch.

Understanding these zones is essential for effective and responsible pesticide application. The surface zone refers to the top layer of water where pesticide application can target pests that are active at this level. The total volume encompasses the entire body of water, which allows for comprehensive treatments that reach various depths where pests may inhabit. The bottom layer is crucial as some pests reside near the sediment, requiring targeted applications to reach them effectively. Finally, canals and ditches are specific areas that often need management due to their role in water control and pest presence.

Knowledge of these zones helps ensure that pesticide applications are effective while minimizing potential impacts on non-target organisms and the environment.