What are the variables that affect spray rate?

What are the variables that affect spray rate?

• A. The weight of the pesticide bottle.
• B. The nozzle flow rate and the walking speed.
• C. The color of the nozzle.
• D. The time of day.

Answer: (B)

Spray rate comes from how much liquid the nozzle puts out per minute and how fast you move over the target area. The nozzle’s flow rate, set by the nozzle design and the system pressure, determines the volume emitted each minute. Your walking speed (ground speed) decides how long that liquid is applied to a given patch of area—the slower you move, the more liquid per area; the faster you move, the less. Together, these two factors set the spray rate per area, and calibration ensures you hit the desired rate. The weight of the pesticide bottle, the nozzle color, or the time of day do not change how much is emitted or how long you’re over a spot.

Spray rate comes from how much liquid the nozzle puts out per minute and how fast you move over the target area. The nozzle’s flow rate, set by the nozzle design and the system pressure, determines the volume emitted each minute. Your walking speed (ground speed) decides how long that liquid is applied to a given patch of area—the slower you move, the more liquid per area; the faster you move, the less. Together, these two factors set the spray rate per area, and calibration ensures you hit the desired rate. The weight of the pesticide bottle, the nozzle color, or the time of day do not change how much is emitted or how long you’re over a spot.