How often should calibration of pesticide application equipment be done?

Calibration of pesticide application equipment is crucial for ensuring that the right amount of pesticide is being applied and for minimizing environmental impact. By calibrating at the beginning of each season, operators establish a baseline for application rates and performance under current conditions, taking into account any changes that may affect how equipment functions, such as wear and tear, changes in environmental conditions, or updates in application techniques.

Furthermore, calibrating whenever changes are made—such as switching to a different formulation, changing nozzle types, or adjusting application speeds—ensures that the equipment operates accurately regardless of differing factors that could affect pesticide efficacy and safety. This practice helps in maintaining compliance with regulatory standards and protecting both the applicator and the environment from potential pesticide misapplication.

Other options suggest less frequent calibration, which could lead to application inaccuracies and might not ensure optimal performance throughout the season. Regular calibration minimizes risks associated with under- or over-application of pesticides, supporting responsible agricultural practices.