If your sprayer applies 30 gallons per acre at 10 miles per hour, how many gallons per acre would be applied at 15 miles per hour?

• A. 15 gallons per acre
• B. 20 gallons per acre
• C. 25 gallons per acre
• D. 30 gallons per acre

Answer: (B)

To determine the amount of pesticide applied per acre as the speed of the sprayer changes, it is important to understand the relationship between speed and the volume of liquid applied. When the speed of the sprayer increases, the efficiency of the application changes due to the coverage capability of the sprayer.

In this scenario, the sprayer initially applies 30 gallons per acre at a speed of 10 miles per hour. When the speed increases to 15 miles per hour, you need to consider that the sprayer is covering ground more quickly. Since the area being covered per minute has increased due to the higher speed, the rate of application will decrease for the same volume of liquid if not adjusted.

The volume applied per acre will typically decrease as the speed increases, assuming the nozzle orifices and output rates remain unchanged, because the sprayer will not be able to distribute the same amount of liquid over the same area in the same amount of time. Thus, at 15 miles per hour, a reduction in the volume applied per acre occurs.

Applying correct calculations or ratios, it can be determined that the application rate at 15 miles per hour results in a reduced application of 20 gallons per acre while maintaining similar levels of efficacy through proper nozzle settings