What must be done when increasing or decreasing the delivery rate of a sprayer?

When the delivery rate of a sprayer needs to be adjusted, changing the nozzle size is an effective and necessary action. Nozzles play a crucial role in determining the flow rate and the distribution pattern of the spray.

By selecting a different nozzle size, you can increase or decrease the amount of liquid that is delivered over a given period. Larger nozzles will allow more liquid to pass through, resulting in a higher delivery rate, whereas smaller nozzles will restrict flow, reducing the delivery rate. This adjustment is critical for achieving the desired application rate, ensuring efficiency and effectiveness in pest management or fertilization practices.

The other options do not address the direct method of adjusting the delivery rate. Adjusting the sprayer speed may alter the application rate, but it is not the most precise method for achieving specific delivery rates compared to changing the nozzle size. Removing the sprayer lid does not influence the delivery rate and could pose safety risks or contamination issues. Continuing without making any changes would not resolve the need for a different delivery rate, potentially leading to inadequate or excessive application.