Pesticides and the Environment

Question 1

The airborne movement of pesticide particles from the target area occurs only during application and is clearly visible when it occurs.
(True or False)

Answer 1

False

Question 2

Select the condition that could help reduce pesticide volatilization:
A. High air temperatures
B. Low relative humidity
C. Incorporation
D. Smaller droplets

Answer 2

C. Incorporation

Question 3

Pesticide adsorption is greatest in coarse, sandy soil.

True or False

Answer 3

False

Question 4

Runoff is usually more likely from a water saturated soil than from an unsaturated soil.
(True or False)

Answer 4

True

Question 5

Pesticide degradation processes can be beneficial because they reduce the amount of pesticide residue in the environment.
(True or False)

Answer 5

True

Question 6

The upper level of the water saturated zone in the soil is called the:
A. Surface water
B. Groundwater
C. Aquifer level
D. Water table

Answer 6

D. Water table

Question 7

Pesticides can reach groundwater through:
A. Microbial activity
B. Leaching
C. Photo degradation
D. Absorption

Answer 7

B. Leaching

Question 8

Pesticide properties have little if any effect on whether a chemical will reach groundwater.
(True or False)

Answer 8

False

Question 9

Pesticide contaminated surface water can contaminate groundwater.
(True or False)

Answer 9

True

Question 10

To reduce the potential for groundwater contamination:
A. Do not dispose of leftover spray mix
     near wells or sinkholes
B. Prevent back siphoning into water
     sources
C. Delay application of pesticides if a 
     heavy rain is expected
D. Do all the above

Answer 10

D. Do all the above

Question 11

Drift can be minimized if precautionary measures are taken (monitor weather, alter spray systems).
(True or False)

Answer 11

True

Question 12

Select the incorrect statement. To reduce the chances of bee poisoning from pesticides:
A. Select dust formulations whenever
     possible
B. Do not apply pesticides toxic to bees
     during bloom
C. Reduce drift during application
D. Do not treat areas near beehives

Answer 12

A. Select dust formulations whenever possible.

Question 13

Fish kills most commonly result from pollution of water by:
A. Herbicides
B. Fungicides
C. Insecticides
D. Rodenticides

Answer 13

C. Insecticides

Question 14

Drift problems can be reduced by:
A. Raising pressure and decreasing
     nozzle orifice size
B. Applying in very calm, stable air
     conditions
C. Spraying downwind of a sensitive
     area and leaving an untreated border
D. Spraying volatile spray mixtures
     during high temperature conditions

Answer 14

C. Spraying downwind of a sensitive area and leaving an untreated border.

Question 15

Accidental or intentional environmental damage caused by a pesticide can result in financial losses to the responsible party.
(True or False)

Answer 15

True