Which statement about posting and notification requirements is false?

The statement regarding the requirement of posting and notification about pesticide applications made in agricultural areas is indeed incorrect. While many states do have regulations in place concerning notification and posting requirements for pesticide applications, it is not a universal rule that applies to all agricultural areas. In some regions, these requirements might differ significantly based on local laws or specific circumstances surrounding the application, including the type of pesticide used or the specific agricultural practices of the area.

The rationale in the other options is based on standard practices that are commonly followed. For instance, the first option reflects the fact that states may indeed mandate that treated sites be posted right after application to ensure public safety. The third option highlights a typical method of posting, which is the use of flags or signs to alert people about hazardous areas. The fourth option pertains to the transparency requirements some states have regarding pesticide application, often requiring the availability of safety documentation to clients, which is a common practice for consumer safety and informed usage.