What is considered a pre-application activity for pesticides?

Mixing or loading pesticides is considered a pre-application activity because it directly involves preparing the pesticides for application to control pests effectively. This stage is critical in ensuring the proper formulation and concentration of the pesticide, as well as adhering to safety and application guidelines. Proper mixing and loading practices help in minimizing risks associated with pesticide spills, exposure, and potential environmental contamination.

On the other hand, harvesting crops occurs after pesticide application and thus does not fit into the pre-application category. Cleaning pesticide application equipment is also an important process but generally falls under post-application maintenance and safety procedures. Transporting pesticide containers is necessary for getting the pesticides to the application site, but it is not part of the actual preparation of the pesticides for use. Therefore, mixing or loading is the correct choice as it specifically pertains to the actions taken before applying the pesticides.