CPA - Certified Pesticide Applicator Application Equipment and Calibration Questions and Answers

Question 1

An applicator is calibrating a boom sprayer.
After collecting the output from several nozzles for one minute, they find that one nozzle's output is 15% higher than the average of the other nozzles.
What is the most appropriate action to take?

Accepted Answer

Replace the nozzle because its output is significantly outside the acceptable range.

Answer

Increase the sprayer pressure to compensate for the higher output.

Answer

Slightly decrease the travel speed to ensure adequate coverage.

Answer

Mark the nozzle and continue spraying, but overlap more in that nozzle's spray area.

Question 2

Which of the following changes to sprayer setup would be most effective in reducing pesticide drift?

Accepted Answer

Switching to low-drift nozzles, such as air-induction types.

Answer

Increasing the boom height above the target crop.

Answer

Using nozzles that produce smaller, finer droplets.

Answer

Increasing the sprayer pressure significantly.

Question 3

An applicator needs to spray a rectangular field that is 1,200 feet long and 500 feet wide. The calibrated sprayer applies 20 gallons per acre (GPA). How many total gallons of spray mixture are needed to treat the entire field? (43,560 sq. ft. = 1 acre)

Accepted Answer

275 gallons

Answer

344 gallons

Answer

600 gallons

Answer

459 gallons

Question 4

During a pre-application equipment check, you discover a small leak in a hose connection. What is the correct immediate action?

Accepted Answer

Stop and repair the leak by tightening the connection or replacing the faulty part before any application begins.

Answer

Wrap the connection with duct tape as a temporary fix and proceed with the application.

Answer

Note the leak's location and continue with the application, planning to fix it later.

Answer

Reduce the system pressure to minimize the leak and complete the job quickly.

Question 5

To double the flow rate of a sprayer by only adjusting the pressure, the pressure must be:

Accepted Answer

Quadrupled (increased by 4 times).

Answer

Doubled (increased by 2 times).

Answer

Tripled (increased by 3 times).

Answer

Halved (decreased by half).

Question 6

Which type of nozzle is generally best suited for broadcast application of herbicides, producing a tapered-edge flat spray pattern that requires overlapping?

Accepted Answer

Flat-fan nozzle

Answer

Hollow-cone nozzle

Answer

Full-cone nozzle

Answer

Flooding nozzle

An applicator is calibrating a boom sprayer.After collecting the output from several nozzles for one minute, they find that one nozzle's output is 15% higher than the average of the other nozzles.What is the most appropriate action to take?

An applicator is calibrating a boom sprayer.
After collecting the output from several nozzles for one minute, they find that one nozzle's output is 15% higher than the average of the other nozzles.
What is the most appropriate action to take?