Which equipment monitors pressure in booms, determines output of nozzles and affects overall spray quality?

• A. Pressure Gauge
• B. Pump
• C. Agitation
• D. Valves

Answer: (A)

Consistent spray quality hinges on knowing the pressure inside the boom lines, because nozzle output and droplet behavior change with pressure. The pressure gauge is the instrument that gives you an actual reading of that pressure, so you can set and maintain the target level by adjusting the pump speed or the regulator. When pressure stays steady, nozzles deliver a uniform flow, producing uniform droplets and a uniform spray pattern across the field.

If pressure runs too high, droplets become smaller, increasing drift and reducing coverage in the target area. If pressure is too low, flow through nozzles drops, resulting in uneven coverage and weak application. The pump provides the pressure, agitation mixes the chemical solution, and valves regulate flow, but they do not continuously monitor the system pressure. The gauge is the key tool for ensuring the boom operates at the correct pressure for optimal spray quality.