Parts of calibrating a broadcast sprayer include which factors?

• A. Uniform pressure, constant speed, nozzle tip
• B. Temperature, humidity, wind
• C. Battery life, color, size
• D. Filter type, hose length, spray duration

Answer: (A)

Calibrating a broadcast sprayer hinges on controlling how much liquid is actually applied and how it is delivered across the field. The three core factors that make this possible are uniform pressure, constant speed, and the nozzle tip.

Uniform pressure ensures the spray system delivers a steady flow through each nozzle. If pressure fluctuates, the amount spraying from each nozzle changes, making the overall rate unpredictable. Maintaining constant speed is about how fast you move across the field; when speed is steady, the area covered per unit time stays consistent, so the application rate per acre remains predictable. The nozzle tip determines the actual flow rate at that pressure and shapes the spray pattern and droplet size; different tips will deliver different volumes and coverage, so selecting the right tip is crucial to hitting the target rate and achieving the desired distribution.

Environmental conditions like temperature, humidity, and wind affect drift and deposition but aren’t the calibration variables that set the output rate. While factors like filter type, hose length, and spray duration can influence operation, they don’t define the fundamental calibration trio as directly as pressure, speed, and nozzle tip.