What does "REI" stand for on a herbicide label?

"REI" stands for Restricted Entry Interval on a herbicide label. This term indicates the period of time following the application of a pesticide during which entry into the treated area is limited or restricted to protect individuals from potential exposure to hazardous residues.

Understanding the REI is crucial for ensuring safety for workers and others who may enter the area where pesticides have been applied. The interval is established based on the toxicity of the herbicide, application method, and potential risks, as well as data from studies regarding safe re-entry times post-application.

The other options do not accurately reflect the term's meaning or context within pesticide application guidelines. Recognizing the importance of the REI helps in complying with safety regulations and protecting human health in agricultural and horticultural practices.