NYS PCO Equipment and Calibration Flashcards

Calibration of pesticide application equipment is performed to ensure that:

Answer: The correct amount of pesticide is applied per unit area as specified on the label

Calibration verifies that the sprayer delivers the label-specified application rate per acre or square foot, preventing under- or over-application.

A power sprayer nozzle that produces a fan pattern is MOST appropriate for which type of application?

Answer: Flat-fan nozzles for broadcast or band spraying on flat surfaces

Flat-fan nozzles produce an even, flat spray pattern ideal for broadcast coverage of horizontal surfaces.

If a sprayer is applying too much pesticide per 1,000 sq ft, the PCO should:

Answer: Increase walking speed, decrease pressure, or switch to a nozzle with lower output

Reducing output per area requires increasing walking speed, reducing nozzle pressure, or using a lower-output nozzle to bring the application rate into label compliance.

What does GPM stand for in pesticide sprayer calibration?

Answer: Gallons Per Minute

GPM (gallons per minute) is the nozzle output flow rate used as a key variable in calculating the correct application rate during calibration.

Which piece of equipment is used to measure nozzle output during sprayer calibration?

Answer: A graduated cylinder or collection container timed over 30–60 seconds

Collecting and measuring nozzle output in a graduated cylinder for a timed interval determines actual GPM, which is the basis for calibration calculations.

Why should pesticide-application equipment be rinsed with clean water after each use?

Answer: To prevent pesticide residue buildup that can cause corrosion, cross-contamination, and nozzle plugging

Thorough rinsing removes pesticide residues that can corrode metal parts, plug nozzles, and contaminate subsequent applications with incompatible chemicals.