Which registration number must be documented during a restricted-use pesticide application?

The EPA registration number is the correct choice because this number indicates that the pesticide product has been evaluated and approved by the Environmental Protection Agency for use. The registration number signifies that the product meets safety standards and has undergone rigorous testing for effectiveness and environmental impact.

When applying restricted-use pesticides, it’s important to document the EPA registration number as it directly links to the specific product being used, ensuring compliance with federal regulations. Having this number on record also aids in tracking the usage for future reference and potential inspections.

The other types of registration numbers mentioned do not have the same significance in the context of restricted-use pesticide applications. The state registration number pertains to state-specific regulations, the dealer registration number relates to the retailer handling the product, and the manufacturer registration number identifies the company that produces the pesticide; however, none of these directly certify the product for safety and effectiveness like the EPA registration number does.