WASHINGTON PESTICIDE LAWS AND SAFETY
TEST 2026 EXAM SCRIPT WITH CORRECT
ANSWERS GRADED A+
● The use of temperature or humidity manipulation is a ________
control method for insects Answer: Physical
● Drift problems can be reduced by:
a. using lower pressure, smaller nozzle orifices
b. applying in very calm, stable air conditions
c. spraying upwind of a sensitive area
d. placing bloom as close to target as possible Answer: d. placing a
boom as close to the target as possible
● Which is not a concern handling a emulsifiable concentrate pesticide:
a. high phytotoxicity
b. may be easily absorbed through human and animal skin
c. flammability
d. easily clogs nozzles and screens Answer: d. easily clogs nozzles and
screens
,● EPA and WSDA are the only federal and state agencies that regulate
pesticides (T/F) Answer: False
● Two or more pesticides that cannot mixed together effectively are said
to be ______. Answer: Incompatible
● All formations with the same active ingredient carry the same signal
word (T/F) Answer: False
● The skull and crossbones symbol must appear on every pesticide label
(T/F) Answer: False
● The best way to dispose of a registered pesticide is to:
a. pour it into the sewer system
b. dump it in a vacant area
c. use it as direct on the label
d. ship it to the EPA Answer: c. use it as direct on the label
● To minimize the drift when applying a herbicide, the best type of
nozzle to use is:
a. a low pressure, flat fan
b. off center
c. a high pressure cone
,d. makes no difference Answer: a. a low pressure, flat fan
● Which LD50 is a representative of a highly toxic pesticide:
a. 640 mg/kg
b. 5,800 mg/kg
c. 12,840 mg/kg
d. 46 mg/kg Answer: d. 46 mg/kg
● Pesticide-contaminated surface water can contaminate groundwater
(T/F) Answer: True
● Pesticide records are useful only to applicators in case they have
problems with effectiveness (T/F) Answer: False
● If an applicator had two major label violations and was cited by the
WSDA, they could face a maximum fine of $15,000 and lose their
liscence (T/F) Answer: True
● Dealers must keep records for 7 years on the sale of general use
agricultural pesticides (T/F) Answer: True
● One of the earliest uses of chemicals as pesticides was the burning of
sulfur (T/F) Answer: True
, ● When the pest reaches the _____, pest management procedures need
to be applied to prevent the pest from economically damaging
populations. Answer: Economic threshold
● Which of the following is not considered a mechanical control
method:
a. fencing a crop to prevent deer entry
b. netting blueberry bushes to keep birds away
c. releasing a parasitic wasp
d. washing of aphids with a stream of water
e. removing a rhododendron with a root disease Answer: c. releasing a
parasitic wasp
● Which of the following is a cultural control method:
a. fertilization
b. planting time
c. pruning
d. crop rotation
e. all of the above Answer: e. all of the above
● The first step in a pest management program is to identify the pest
(T/F) Answer: True
TEST 2026 EXAM SCRIPT WITH CORRECT
ANSWERS GRADED A+
● The use of temperature or humidity manipulation is a ________
control method for insects Answer: Physical
● Drift problems can be reduced by:
a. using lower pressure, smaller nozzle orifices
b. applying in very calm, stable air conditions
c. spraying upwind of a sensitive area
d. placing bloom as close to target as possible Answer: d. placing a
boom as close to the target as possible
● Which is not a concern handling a emulsifiable concentrate pesticide:
a. high phytotoxicity
b. may be easily absorbed through human and animal skin
c. flammability
d. easily clogs nozzles and screens Answer: d. easily clogs nozzles and
screens
,● EPA and WSDA are the only federal and state agencies that regulate
pesticides (T/F) Answer: False
● Two or more pesticides that cannot mixed together effectively are said
to be ______. Answer: Incompatible
● All formations with the same active ingredient carry the same signal
word (T/F) Answer: False
● The skull and crossbones symbol must appear on every pesticide label
(T/F) Answer: False
● The best way to dispose of a registered pesticide is to:
a. pour it into the sewer system
b. dump it in a vacant area
c. use it as direct on the label
d. ship it to the EPA Answer: c. use it as direct on the label
● To minimize the drift when applying a herbicide, the best type of
nozzle to use is:
a. a low pressure, flat fan
b. off center
c. a high pressure cone
,d. makes no difference Answer: a. a low pressure, flat fan
● Which LD50 is a representative of a highly toxic pesticide:
a. 640 mg/kg
b. 5,800 mg/kg
c. 12,840 mg/kg
d. 46 mg/kg Answer: d. 46 mg/kg
● Pesticide-contaminated surface water can contaminate groundwater
(T/F) Answer: True
● Pesticide records are useful only to applicators in case they have
problems with effectiveness (T/F) Answer: False
● If an applicator had two major label violations and was cited by the
WSDA, they could face a maximum fine of $15,000 and lose their
liscence (T/F) Answer: True
● Dealers must keep records for 7 years on the sale of general use
agricultural pesticides (T/F) Answer: True
● One of the earliest uses of chemicals as pesticides was the burning of
sulfur (T/F) Answer: True
, ● When the pest reaches the _____, pest management procedures need
to be applied to prevent the pest from economically damaging
populations. Answer: Economic threshold
● Which of the following is not considered a mechanical control
method:
a. fencing a crop to prevent deer entry
b. netting blueberry bushes to keep birds away
c. releasing a parasitic wasp
d. washing of aphids with a stream of water
e. removing a rhododendron with a root disease Answer: c. releasing a
parasitic wasp
● Which of the following is a cultural control method:
a. fertilization
b. planting time
c. pruning
d. crop rotation
e. all of the above Answer: e. all of the above
● The first step in a pest management program is to identify the pest
(T/F) Answer: True
