Which statement describes a disadvantage of mist blower sprayers?

• A. Calibration is more critical.
• B. They never require calibration.
• C. They always provide better coverage than airblast sprayers.
• D. They are lighter than airblast sprayers.

Answer: (A)

Mist blower sprayers rely on a high-velocity air stream to carry very fine droplets, so how much chemical actually lands on the target depends on several interacting factors— nozzle flow, blower speed, spray pressure, travel speed, and even wind and humidity. Because small changes in any of these can shift the amount deposited per acre, calibration becomes essential to hit the desired rate without drifting off-target. If you don’t calibrate accurately, you risk under- or over-application, wasted product, crop injury, or unwanted drift. That need for precise setup is why calibration is described as a disadvantage for mist blower sprayers. The other statements aren’t correct: they do require calibration, they don’t universally offer better coverage than airblast sprayers, and weight comparisons to airblast units aren’t a reliable trait.