Which of the following is a common reason for checking sprayer calibration?

Checking sprayer calibration is essential to ensure effective coverage of pesticides. Proper calibration determines the correct application rate of the pesticide being used, which directly impacts its effectiveness against targeted pests. If the sprayer is not calibrated correctly, it may apply too much or too little pesticide, leading to inadequate pest control, potential harm to desirable plants, or environmental contamination. Effective coverage is crucial for achieving the desired results in pest management, making it a primary reason for calibration.

Other factors, like temperature and application speed, can influence sprayer performance, but they do not directly address the need for the correct delivery rate and pattern of pesticide application. Similarly, while reducing pesticide costs may be a consideration, ensuring effective coverage is the fundamental reason for checking sprayer calibration, as it ultimately affects both efficacy and safety in pest control practices.