# Chapter 8- Calibrating Aerial Application Equiptment Flashcards

1
Q

The most serious effect of over application as a result of poor calibration would be…

A

A phytotoxic effect on treated plants

2
Q

The purpose of calibration is to…

A

Apply the correct amount of pesticide

3
Q

Applying a pesticide at a rate that is higher than the pesticide label rate is…

A

Illegal

4
Q

Pest resistance may be caused be using…

A

Less than the labeled rate of the pesticide

5
Q

Which of the following formulations is most abrasive to spray nozzles?

A

Wettable powders (WP)

6
Q

Knowing the accurate volume of the spray tank is necessary to determine the…

A

Area that can be treated in a single load

7
Q

Increasing airspeed without changing the spray output will result in…

A

Less pesticide active ingredient applied per acre

8
Q

If 1700 ounces of material is collected from nozzles on a helicopter spray boom in 90 seconds, what is the total flow rate in gallons per minute?

A

8.85

9
Q

An aircraft spraying system has an output rate of 8 gallons per minute. How many gallons are sprayed per mile when the aircraft travels at 130miles per hour?

A

3.7

10
Q

An effective swath width is the…

A

Width of a single pass that includes portions of overlaps from other passes

11
Q

Prop wash displacement would be characterized by a spray pattern that is heavier…

A

On the left half of the swath

12
Q

How many acres per minute will be treated by an aircraft traveling at 135miles per hour and producing a 47-foot effective swath?

A

12.8

13
Q

If an aircraft treats 10.1 acres per minute and has an output of 19 gallons per minute. What is the rate of application per acre (in gallons)?

A

1.88

14
Q

An aircraft sprays 20.2 gallons per minute. How many minutes of spraying time are needed to spray out 147 gallons of spray mixture?

A

7.3

15
Q

At 11.3 gallons per acre, how many acres can be sprayed with 147 gallons of spray mixture?

A

13

16
Q

If an aircraft treats 14 acres per tank of spray mixture, how many pints of pesticide liquid should be put into the spray tank to apply at a rate of 1.5 pints per acre?

A

21

17
Q

To increase the per acre application rate, the best method would be to…

A

Decrease the pump pressure

18
Q

How many acres are in a rectangular field that measures 620feet by 1280feet?

A

18.2

620x1280=793,600ft^2

43,550ft^2=1acre

793,600\43,550=18acres

19
Q

How many acres are in a triangular field that measures 7,800feet at its base and has a height of 1,564feet?

A

140

A=1/2BxH

7,800x1,564=12,199,200

12,199,200x0.5=6,099,600 area of triangle

6,0099,600/43,560=140acres

20
Q

A circular field with a radius of 296feet contains how many acres?

A

6.3

A=3.14 x r^2

296^2=87,616

87,616 x 3.14= 275,114.24

43,560ft^2=1acre

275,114.24/43,560=6.3acres