Which method can decrease the gallonage output of a sprayer?

The method that decreases the gallonage output of a sprayer is reducing the RPMs of the sprayer motor. When the RPMs of the motor are decreased, the pump operates at a slower speed, leading to a reduced flow rate of the liquid being sprayed. This results in a lower output volume per unit of time, effectively minimizing the amount of pesticide being applied over a given area.

In contrast, increasing the number of nozzles would typically increase the total rate of application, as more nozzles mean more points of delivery for the liquid. Increasing the sprayer pressure usually elevates the flow rate as well, allowing more material to be dispensed quickly. Finally, increasing the speed of travel typically results in less product being applied over a given area since the coverage is spread over a greater distance in less time, but it does not directly affect the gallonage output from the sprayer itself.