AERIAL APPLICATION FINAL PAPER 2025/2026
QUESTIONS AND ANSWERS GRADED A+
✔✔Off target pesticide drift is the offsite movement of the pesticide that occurs - ✔✔Any
time after application
✔✔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
✔✔Wider angle spray nozzles usually produce ___ droplets than narrower spray
nozzles - ✔✔Finer
✔✔The most effective boom lengths for reducing the amount of the 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 certain size
range
✔✔Driftable fines are droplets in the size range of - ✔✔50 to 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 vet 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 tank 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 9' 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 chances
✔✔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 is 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 mph - ✔✔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 gpm. 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 gpa, how many acres can be sprayed with 147
gallons of spray mixture - ✔✔13
✔✔If an aircraft treats 14 acres per tank of spray mixture, how many pints of pesticide
liquid should be put into the spray tank to apple at a volume of 1.5 pints per acre -
✔✔21
QUESTIONS AND ANSWERS GRADED A+
✔✔Off target pesticide drift is the offsite movement of the pesticide that occurs - ✔✔Any
time after application
✔✔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
✔✔Wider angle spray nozzles usually produce ___ droplets than narrower spray
nozzles - ✔✔Finer
✔✔The most effective boom lengths for reducing the amount of the 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 certain size
range
✔✔Driftable fines are droplets in the size range of - ✔✔50 to 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 vet 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 tank 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 9' 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 chances
✔✔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 is 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 mph - ✔✔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 gpm. 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 gpa, how many acres can be sprayed with 147
gallons of spray mixture - ✔✔13
✔✔If an aircraft treats 14 acres per tank of spray mixture, how many pints of pesticide
liquid should be put into the spray tank to apple at a volume of 1.5 pints per acre -
✔✔21
