Which label term indicates the time workers must avoid the field after pesticide application?

The term that indicates the time workers must avoid the field after pesticide application is known as the REI, or Restricted Entry Interval. This period is specified on pesticide labels to protect workers from potential exposure to harmful chemicals. During the REI, it is crucial for workers to stay out of treated areas to minimize the risk of inhaling residues, contacting contaminated surfaces, or otherwise being exposed to the pesticide.

In contrast, the EPA number identifies the regulatory approval of the pesticide by the Environmental Protection Agency, but it does not provide information about safety or timing regarding field re-entry. PPE refers to Personal Protective Equipment, which outlines safety gear that should be worn when handling pesticides, but again does not specify the time frame for avoiding treated areas. Lastly, the active ingredient denotes the main chemical component responsible for the pesticide's effectiveness, but it does not relate to timing in terms of exposure for workers. Thus, the REI is specifically concerned with worker safety and defines the mandatory waiting period after pesticide application.