What does the principle display panel refer to on a pesticide label?

The principle display panel on a pesticide label is specifically the front panel of the label. This area is crucial as it is designed to attract the user's attention and convey essential information at a glance. It typically includes the product name, the brand, an indication of its intended use, and important symbols or graphics related to safety and efficacy. This is where a consumer first engages with the pesticide information, making it a key aspect of label design that complies with regulatory standards.

The front panel must clearly display vital information to ensure that users can quickly understand the product's purpose and how to handle it safely. In contrast, the back panel usually contains more detailed instructions, safety precautions, and composition information, which, while also important, does not fall under the definition of the principle display panel. Other options, such as the label on the pesticide container and the invoice for the pesticide purchase, do not relate specifically to the front panel of the pesticide label and thus do not represent the principle display panel designation.