Online quiz #5

Question 1

Pesticides which build up in the bodies of animals are…..

a) volatile
b) persistent
c) accumulative
d) non-persistent

Answer 1

c) accumulative

Question 2

Which factor is LEAST likely to affect physical drift of spray particles?

a) pesticide formulation
b) droplet size
c) windspeed
d) spray pressure

Answer 2

a) pesticide formulation

Question 3

Which factor is MOST likely to affect volatility of a pesticide application?

a) droplet size
b) pesticide formulation
c) windspeed
d) spray pressure

Answer 3

b) pesticide formulation

Question 4

Compared to an ester formulation of 2,4-D, an amine formulation would have lower…

a) leaching
b) runoff
c) volatility
d) physical drift

Answer 4

c) volatility

Question 5

Which is the best example of point-source contamination?
a) a herbicide that had been normally applied to a field runs off into a stream due to soil erosion after a heavy rain

b) a herbicide application made at normal rates to a field leaches into groundwater
c) a 55-gallon drum containing herbicide concentrate ruptures and leaches into groundwater

Answer 5

c) a 55-gallon drum containing herbicide concentrate ruptures and leaches into groundwater

Question 6

Mix/load sites for pesticides should be located at least \_\_\_\_\_\_\_\_ feet from surface water or direct links to groundwater.
  500 
  100 
  200 
  50

Answer 6

200

Question 7

Which type of sprayer is used to apply undiluted pesticide concentrate?

a) high pressure
b) ultra low-volume
c) low pressure hydraulic
d) air blast

Answer 7

b) ultra low-volume

Question 8

Which of the following are effective ways to reduce pesticide spray drift? (multiple answers possible)
a) decrease the sprayer’s ground speed

b) lower the sprayer’s boom height
c) increase the operating pressure of the sprayer
d) use a nozzle that produces a larger droplet size

Answer 8

b) lower the sprayer’s boom height

d) use a nozzle that produces a larger droplet size

Question 9

When calibrating a sprayer or granular applicator, the speed should be checked…

a) on smooth pavement
b) using a speedometer
c) on the actual ground where applications will be made

Answer 9

c) on the actual ground where applications will be made

Question 10

The application rate of a typical walk-behind broadcast spreader is not affected by the operator’s walking speed.
True
False

Answer 10

false

Question 11

Which of the following are acceptable ways to prevent back-siphoning of pesticide solution into a public water supply? (multiple answers possible)
a) an anti-backflow device such as an anti-siphon valve

b) ensure water supply is turned off before removing fill hose from tank
c) a fixed air gap between the fill hose and the pesticide solution in the spray tank
d) avoid filling spray tank when city water pressure is low

Answer 11

a) an anti-backflow device such as an anti-siphon valve

Question 12

Which type of sprayer would be a poor choice for a herbicide application?

a) air blast
b) ultra-low volume
c) hand sprayer
d) low pressure

Answer 12

a) air blast

Question 13

When checking nozzle output on a sprayer, there should be no more than \_\_\_\_\_\_\_\_ variation among nozzles.
  2% 
  20% 
  10% 
  30%

Answer 13

10%

Question 14

If you need to make a major adjustment to your sprayer’s application volume (i.e., the amount of spray solution the sprayer delivers; usually measured in gal/acre or gal/1000 sqft), the best way to do so is to…..

a) change the nozzles
b) change the spray pressure
c) change the sprayer’s ground speed
d) change the boom height

Answer 14

a) change the nozzles

Question 15

Calibration is just as important for granular application equipment as it is for spray equipment.
True
False

Answer 15

true