IOWA APPLICATOR 11F ACTUAL COMPREHENSIVE
EXAM QUESTIONS AND ANSWERS FIRM A+
✔✔Symptoms of bacterial diseases on field crops include
A. Seed decay, seedling blights and root rots
B. Leaf spots and leaf blights
C. Leaf spots, water soaking of tissue and soft rot of tissues
D. All of the above - ✔✔C. Leaf spots, water soaking of tissue and soft rot of tissues
✔✔Which weed is an annual
A. Green foxtail
B. Hemp dogbane
C. Yellow nutsedge
D. Jerusalem artichoke - ✔✔A. Green foxtail
✔✔When applying granules the flying height, airspeed and correct ground tract must be
held as constant as possible to __
A. Avoid drift
B. Obtain uniform results
C. Compensate for variable wind conditions
D. Avoid exposure to nearby airplanes - ✔✔B. Obtain uniform results
✔✔Which herbicide is likely to drift in vapor or gas form under high temperature
conditions
A. Dicamba
B. Atrazine
C. Glyphosate
D. All of the above - ✔✔A. Dicamba
✔✔Which of the following terms describes pesticides that control only certain species of
pest
A. Systemic
B. Selective
C. Non-Selective
D. Contact - ✔✔B. Selective
✔✔Losses of bees to insecticide poisoning can be minimized by
A. Applying treatments when bees are not foraging
B. Using wettable powder formulation
,C. Using arial application instead of ground application
D. Spraying crops only when they are in bloom - ✔✔A. Applying treatments when bees
are not foraging
✔✔A tempeture inversion
A. Exist when temperature decreases with altitude
B. Is usually caused by rapid cooling of the soil surface
C. Occurs when warm night temperatures follow cooler daytime temperatures
D. Signals a near idea spray opportunity
E. All of the above - ✔✔B. is usually caused by rapid cooling of the soil surface
✔✔The ideal configuration of nozzles may vary with
A. Ambient air temperature and viscosity of the finished tank mix
B. Each pesticide applied and formulation
C. Each Aircraft flight pattern
D. Each aircraft delivery system and application rate - ✔✔D. Each aircraft delivery
system and application rate
✔✔Which of the following measures is not recommended for drift control
A. Use a high volatile formulation
B. Use a drift control agent
C. leave an untreated buffer zone around sensitive areas
D. Use nozzle type which produces the largest droplets - ✔✔A. Use a high volatile
formulation
✔✔Which of the following formulations penetrates the skin fastest
A. Dust
B. Granular
C. Wettable Powders
D. Emfulsible concentrates - ✔✔D. Emfusible concentrates
✔✔Which of the following is/are characteristics of proper boom placements
A. Booms should be located behind and below the leading edge of the wing
B. Booms should be as long as the wingspan
C. Booms should be located (dropped) so that the nozzles will be cleaner airflow if
possible
D. Both a and c - ✔✔D. Both A and C
✔✔The compatibility of pesticides can best be determined by
, A. Mixing small amounts of the chemicals in a small container
B. Mixing the chemicals in the spray tank
C. Comparing their concentrations
D. Comparing their LD50s - ✔✔A. Mixing small amounts of the chemicals in a small
container
✔✔Phytotoxicity may occur as a result of
A. Exceptionally bright, hot, dry weather
B. Using excessive pesticide rates
C. Using unlabeled tank mixes
D. All of the above - ✔✔D. All of the above
✔✔What is the term for the amount of pesticide that remains on the crop after
application
A. Residue
B. Tolerance
C. Resistance
D. Emulsion - ✔✔A. Residue
✔✔To apply pesticides aerially safely, economically, and uniformly, the following should
be observed
A. Treatments should be begun on the up wind side of the field so you're not flying
through suspended chemicals
B. A constant airspeed should be maintained during the aerial application
C. Altitude should vary depending on current wind conditions during each swath run
D. All of the above should be observed - ✔✔B. A Constant airspeed should be
maintained during the aerial application
✔✔Reliance on herbicides for weed control can be reduced by
A. Converting to no till
B. Ultizing crop rotation
C. Timely rotary hoeing and cultivation
D. Only b and c
E. Only a, b and c - ✔✔E. Only a, b and c
✔✔It often takes multiple passes over collection pans and plotting's on paper to
determine pattern and swath width of granular
A. True
B. False - ✔✔B. False
EXAM QUESTIONS AND ANSWERS FIRM A+
✔✔Symptoms of bacterial diseases on field crops include
A. Seed decay, seedling blights and root rots
B. Leaf spots and leaf blights
C. Leaf spots, water soaking of tissue and soft rot of tissues
D. All of the above - ✔✔C. Leaf spots, water soaking of tissue and soft rot of tissues
✔✔Which weed is an annual
A. Green foxtail
B. Hemp dogbane
C. Yellow nutsedge
D. Jerusalem artichoke - ✔✔A. Green foxtail
✔✔When applying granules the flying height, airspeed and correct ground tract must be
held as constant as possible to __
A. Avoid drift
B. Obtain uniform results
C. Compensate for variable wind conditions
D. Avoid exposure to nearby airplanes - ✔✔B. Obtain uniform results
✔✔Which herbicide is likely to drift in vapor or gas form under high temperature
conditions
A. Dicamba
B. Atrazine
C. Glyphosate
D. All of the above - ✔✔A. Dicamba
✔✔Which of the following terms describes pesticides that control only certain species of
pest
A. Systemic
B. Selective
C. Non-Selective
D. Contact - ✔✔B. Selective
✔✔Losses of bees to insecticide poisoning can be minimized by
A. Applying treatments when bees are not foraging
B. Using wettable powder formulation
,C. Using arial application instead of ground application
D. Spraying crops only when they are in bloom - ✔✔A. Applying treatments when bees
are not foraging
✔✔A tempeture inversion
A. Exist when temperature decreases with altitude
B. Is usually caused by rapid cooling of the soil surface
C. Occurs when warm night temperatures follow cooler daytime temperatures
D. Signals a near idea spray opportunity
E. All of the above - ✔✔B. is usually caused by rapid cooling of the soil surface
✔✔The ideal configuration of nozzles may vary with
A. Ambient air temperature and viscosity of the finished tank mix
B. Each pesticide applied and formulation
C. Each Aircraft flight pattern
D. Each aircraft delivery system and application rate - ✔✔D. Each aircraft delivery
system and application rate
✔✔Which of the following measures is not recommended for drift control
A. Use a high volatile formulation
B. Use a drift control agent
C. leave an untreated buffer zone around sensitive areas
D. Use nozzle type which produces the largest droplets - ✔✔A. Use a high volatile
formulation
✔✔Which of the following formulations penetrates the skin fastest
A. Dust
B. Granular
C. Wettable Powders
D. Emfulsible concentrates - ✔✔D. Emfusible concentrates
✔✔Which of the following is/are characteristics of proper boom placements
A. Booms should be located behind and below the leading edge of the wing
B. Booms should be as long as the wingspan
C. Booms should be located (dropped) so that the nozzles will be cleaner airflow if
possible
D. Both a and c - ✔✔D. Both A and C
✔✔The compatibility of pesticides can best be determined by
, A. Mixing small amounts of the chemicals in a small container
B. Mixing the chemicals in the spray tank
C. Comparing their concentrations
D. Comparing their LD50s - ✔✔A. Mixing small amounts of the chemicals in a small
container
✔✔Phytotoxicity may occur as a result of
A. Exceptionally bright, hot, dry weather
B. Using excessive pesticide rates
C. Using unlabeled tank mixes
D. All of the above - ✔✔D. All of the above
✔✔What is the term for the amount of pesticide that remains on the crop after
application
A. Residue
B. Tolerance
C. Resistance
D. Emulsion - ✔✔A. Residue
✔✔To apply pesticides aerially safely, economically, and uniformly, the following should
be observed
A. Treatments should be begun on the up wind side of the field so you're not flying
through suspended chemicals
B. A constant airspeed should be maintained during the aerial application
C. Altitude should vary depending on current wind conditions during each swath run
D. All of the above should be observed - ✔✔B. A Constant airspeed should be
maintained during the aerial application
✔✔Reliance on herbicides for weed control can be reduced by
A. Converting to no till
B. Ultizing crop rotation
C. Timely rotary hoeing and cultivation
D. Only b and c
E. Only a, b and c - ✔✔E. Only a, b and c
✔✔It often takes multiple passes over collection pans and plotting's on paper to
determine pattern and swath width of granular
A. True
B. False - ✔✔B. False
