Which of the following is a calibration circumstance?

• A. Periodically throughout season.
• B. Whenever the consistency of the produce changes.
• C. At the beginning of the growing season.
• D. When maintenance is done to equipment.

Answer: (C)

Calibration means confirming that your spray equipment delivers the label rate by checking and adjusting nozzle output, pressure, and travel speed to match the intended application area. Starting at the beginning of the growing season is the best time to calibrate because it sets a reliable baseline after equipment has been stored or potentially changed during off-season, and it accounts for any seasonal changes in canopy height or target density. Establishing these settings early helps ensure the entire season’s applications stay within labeled rates. Calibration is also appropriate after maintenance or when changing components, but the season’s start provides the most consistent, initial setup for accurate applications.