Within what margin should the spray rate be when checking the label during calibration?

• A. Within 20%.
• B. Within 50%.
• C. There is no required margin.
• D. Within 5%.

Answer: (D)

The key idea is that spray output must match the labeled rate as closely as possible during calibration. The acceptable tolerance is within five percent of the label rate. This tight margin keeps application accurate so you don’t under- or over-apply the product, which can affect efficacy, crop safety, and environmental impact. Larger tolerances, like twenty or fifty percent, or having no margin at all, would allow substantial deviations from the label rate and are not acceptable practice.