IOWA PESTICIDE APPLICATOR UPDATED EVALUATION
TEST QUESTIONS AND SOLUTIONS GUARANTEE A+
✔✔Off-target pesticide drift is the offsite movement of the pesticide that occurs: - ✔✔At
the time of pesticide application or soon thereafter
✔✔The color code for a nozzle that produces spray droplets in the extra fine category
is: - ✔✔Purple
✔✔Generally, the optimum time for making an aerial application of a liquid when droplet
evaporation is a concern is: - ✔✔Early morning
✔✔Which of the following factors has NO effect on off-target pesticide drift? -
✔✔Constant 3 mph wind
✔✔Wider angle spray nozzles usually produce _________ droplets than narrower spray
nozzles - ✔✔Finer
✔✔The most effective boom lengths for reducing the amount of drift are: - ✔✔75% of
the wingspan or the rotor span
✔✔Aside from external factors, the most important factors affecting off-target drift are: -
✔✔The size of the spray droplets and the percentage of droplets within a certain size
range
✔✔Driftable fines are droplets in the size range of: - ✔✔50-200 microns
✔✔The droplet size at which spray drift becomes a concern is: - ✔✔200 microns and
below
✔✔Aircraft suitable for aerial application of pesticides must be: - ✔✔Able to lift,
transport, and disperse pesticides safely
✔✔One of the reasons for an adequate vent in the aircraft pesticide tank is to: -
✔✔Prevent a vacuum from altering the normal flow of liquid
✔✔The purpose of baffles inside a liquid spray tank is to: - ✔✔Reduce sloshing of the
liquid during flight
✔✔Hydraulic agitation of the mixture in the aircraft spray tanks requires: - ✔✔Sufficient
pump output capacity
, ✔✔A proper functioning positive cutoff valve with a suck-back feature will supply
___________ pressure to the boom and nozzles when the spray flow is stopped -
✔✔High positive
✔✔The purpose of bleed valves at the ends of the spray boom is to: - ✔✔Prevent
pressure from building up from trapped air when the spray valve is opened
✔✔To accommodate for the influence of prop wash on spray pattern, it is necessary to:
- ✔✔Reposition the nozzles on the spray boom
✔✔The advantage of an electronic sprayer volume controller is that it: - ✔✔Reduces or
increases the spray output as airspeed changes
✔✔Ram-air spreaders can - ✔✔Compromise fixed wing aircraft performance
✔✔The purpose of adjusting ram-air spreader vanes is to: - ✔✔Improve the granule
distribution pattern
✔✔The purpose of calibration is to: - ✔✔Apply the correct amount of pesticide
✔✔Applying a pesticide at a rate that is higher than the pesticide label rate is: -
✔✔Illegal
✔✔Increasing airspeed without changing the spray output will result in: - ✔✔Less
pesticide active ingredient applied per acre
✔✔If 1700 ounces of material collected from nozzles on a helicopter spray boom in 90
seconds, what is the total flow volume in gallons per minute? - ✔✔8.85
✔✔An aircraft spraying system has an output volume of 8 gallons per minute. How
many gallons are sprayed per mile when the aircraft travels at 130 miles per hour? -
✔✔3.7
✔✔An effective swath width is the - ✔✔Width of a single pass that includes portions of
overlaps from other passes
✔✔An aircraft sprays 20.2 gallons per minute. How many minutes of spraying time are
needed to spray out 147 gallons of spray mixture? - ✔✔7.3
✔✔Given an application rate of 11.3 gallons per acre, how many acres can be sprayed
with 147 gallons of spray mixture - ✔✔13
TEST QUESTIONS AND SOLUTIONS GUARANTEE A+
✔✔Off-target pesticide drift is the offsite movement of the pesticide that occurs: - ✔✔At
the time of pesticide application or soon thereafter
✔✔The color code for a nozzle that produces spray droplets in the extra fine category
is: - ✔✔Purple
✔✔Generally, the optimum time for making an aerial application of a liquid when droplet
evaporation is a concern is: - ✔✔Early morning
✔✔Which of the following factors has NO effect on off-target pesticide drift? -
✔✔Constant 3 mph wind
✔✔Wider angle spray nozzles usually produce _________ droplets than narrower spray
nozzles - ✔✔Finer
✔✔The most effective boom lengths for reducing the amount of drift are: - ✔✔75% of
the wingspan or the rotor span
✔✔Aside from external factors, the most important factors affecting off-target drift are: -
✔✔The size of the spray droplets and the percentage of droplets within a certain size
range
✔✔Driftable fines are droplets in the size range of: - ✔✔50-200 microns
✔✔The droplet size at which spray drift becomes a concern is: - ✔✔200 microns and
below
✔✔Aircraft suitable for aerial application of pesticides must be: - ✔✔Able to lift,
transport, and disperse pesticides safely
✔✔One of the reasons for an adequate vent in the aircraft pesticide tank is to: -
✔✔Prevent a vacuum from altering the normal flow of liquid
✔✔The purpose of baffles inside a liquid spray tank is to: - ✔✔Reduce sloshing of the
liquid during flight
✔✔Hydraulic agitation of the mixture in the aircraft spray tanks requires: - ✔✔Sufficient
pump output capacity
, ✔✔A proper functioning positive cutoff valve with a suck-back feature will supply
___________ pressure to the boom and nozzles when the spray flow is stopped -
✔✔High positive
✔✔The purpose of bleed valves at the ends of the spray boom is to: - ✔✔Prevent
pressure from building up from trapped air when the spray valve is opened
✔✔To accommodate for the influence of prop wash on spray pattern, it is necessary to:
- ✔✔Reposition the nozzles on the spray boom
✔✔The advantage of an electronic sprayer volume controller is that it: - ✔✔Reduces or
increases the spray output as airspeed changes
✔✔Ram-air spreaders can - ✔✔Compromise fixed wing aircraft performance
✔✔The purpose of adjusting ram-air spreader vanes is to: - ✔✔Improve the granule
distribution pattern
✔✔The purpose of calibration is to: - ✔✔Apply the correct amount of pesticide
✔✔Applying a pesticide at a rate that is higher than the pesticide label rate is: -
✔✔Illegal
✔✔Increasing airspeed without changing the spray output will result in: - ✔✔Less
pesticide active ingredient applied per acre
✔✔If 1700 ounces of material collected from nozzles on a helicopter spray boom in 90
seconds, what is the total flow volume in gallons per minute? - ✔✔8.85
✔✔An aircraft spraying system has an output volume of 8 gallons per minute. How
many gallons are sprayed per mile when the aircraft travels at 130 miles per hour? -
✔✔3.7
✔✔An effective swath width is the - ✔✔Width of a single pass that includes portions of
overlaps from other passes
✔✔An aircraft sprays 20.2 gallons per minute. How many minutes of spraying time are
needed to spray out 147 gallons of spray mixture? - ✔✔7.3
✔✔Given an application rate of 11.3 gallons per acre, how many acres can be sprayed
with 147 gallons of spray mixture - ✔✔13
