CFA Application Equipment and Calibration Questions and Answers

Question 1

An applicator calibrates a broadcast spreader with an effective swath width of 12 feet.
They drive a 100-foot test course and collect 3.0 lbs of fertilizer.
What is the application rate in pounds per acre?

Accepted Answer

121 lbs/acre

Answer

82 lbs/acre

Answer

109 lbs/acre

Answer

91 lbs/acre

Question 2

Which of the following is a primary advantage of using a drop spreader over a rotary (broadcast) spreader for granular fertilizer application?

Accepted Answer

More precise placement of material with less chance of off-target application.

Answer

Faster application speed over large, open areas.

Answer

Less sensitivity to variations in fertilizer particle size.

Answer

Wider and more forgiving application swath.

Question 3

When using a ground-driven broadcast (rotary) spreader, which of the following operator actions would most likely DECREASE the fertilizer application rate (lbs/acre)?

Accepted Answer

Increasing the walking or driving speed.

Answer

Decreasing the walking or driving speed.

Answer

Making passes with a greater amount of overlap.

Answer

Raising the handle to increase the spreader's angle.

Question 4

An applicator notices distinct, parallel green and yellow streaks in a turf area after fertilizing with a rotary spreader. What is the most likely cause of this application error?

Accepted Answer

Incorrect overlap between spreader passes.

Answer

Driving too quickly across the entire area.

Answer

Using a fertilizer with a high salt index.

Answer

The spreader's gate setting was too high.

Question 5

To minimize spray drift when making a liquid fertilizer application on a slightly windy day, which type of nozzle would be the best choice?

Accepted Answer

A low-pressure, large-droplet air induction nozzle.

Answer

A fine-mist, hollow-cone nozzle.

Answer

A standard flat-fan nozzle operated at maximum pressure.

Answer

A high-pressure, solid-stream nozzle.

Question 6

An applicator is calibrating a boom sprayer and measures the nozzle flow rate in gallons per minute (GPM), the travel speed in miles per hour (MPH), and the nozzle spacing in inches (W). Which formula correctly calculates the application rate in Gallons Per Acre (GPA)?

Accepted Answer

GPA = (GPM * 5940) / (MPH * W)

Answer

GPA = (GPM * MPH * 5940) / W

Answer

GPA = (MPH * W) / (GPM * 5940)

Answer

GPA = (MPH * W * 5940) / GPM

An applicator calibrates a broadcast spreader with an effective swath width of 12 feet.They drive a 100-foot test course and collect 3.0 lbs of fertilizer.What is the application rate in pounds per acre?

An applicator calibrates a broadcast spreader with an effective swath width of 12 feet.
They drive a 100-foot test course and collect 3.0 lbs of fertilizer.
What is the application rate in pounds per acre?