Indiana Pesticide Applicator Core Practice Exam - Prep, Study Guide & Practice Test

When a worn nozzle exhibits a flow rate that exceeds ten percent of a new nozzle's performance, the recommended action is to replace the nozzle. This is essential because a nozzle that is not functioning within the appropriate flow rate can lead to uneven pesticide application, which can cause both ineffective pest control and potential harm to the environment. Worn nozzles can increase the risk of applying more pesticide than intended, contributing to over-application and runoff, which can have harmful ecological effects.

Replacing the nozzle ensures that the equipment operates efficiently and effectively, maintaining the integrity of the application process. This proactive measure helps in adhering to pesticide application guidelines, which are crucial for safe and responsible pesticide usage. It is important to regularly inspect and maintain equipment to prevent any deviation from the intended application rates.