When should pesticide application equipment be calibrated?

Calibration of pesticide application equipment is crucial for ensuring accurate and effective pesticide application, which helps in achieving the desired pest control while minimizing environmental impact. The correct choice emphasizes that calibration should occur before the first use of the equipment each year to set a baseline for correct functioning. It is also essential when changing the type of pesticide being used, as different formulations may require different application rates or methods.

Additionally, moving equipment to another site can introduce variations in terrain or environmental factors that can affect application efficiency, necessitating recalibration. Finally, if there’s a change in the rate or speed of application, recalibration is needed to ensure that the desired amount of pesticide is being applied correctly. This comprehensive approach helps ensure that the equipment operates optimally and that pesticide applications are effective and compliant with regulations.