ILLINOIS PESTICIDE APPLICATOR
RIGHTS-OF-WAY EXAM QUESTIONS
AND WELL ELABORATED ANSWERS
LATEST VERSION | A+
GRADED|NEW!!{REVISED}
Define compressed-air sprayers - <CORRECT ANSWER >>Pump compresses air, allowing it to be
sprayed; single stream of spray with large droplets; hand-held or shoulder strap
Define backpack sprayers - <CORRECT ANSWER >>Hand-operated piston or diaphragm pump;
holds more gallons and is better for long-term work
What are the two types of nozzles for manual sprayers? - <CORRECT ANSWER >>Adjustable
(hallow cone, straight stream) and flat fan or flooding
Define effective sprayed width - <CORRECT ANSWER >>The distance between spray passes
Pressure ____________ (increases/decreases) as material is sprayed - <CORRECT ANSWER
>>Decreases
How do you maintain pressure as material is sprayed? - <CORRECT ANSWER >>Re-pressurize
frequently, use a pressure gauge, and use a pressure-regulating valve
Define pesticide injection equipment - <CORRECT ANSWER >>Pesticide injected directly into
plant's vascular system; requires active transpiring
What is an advantage of injection equiptment? - <CORRECT ANSWER >>No drift
, Define boom sprayers - <CORRECT ANSWER >>Best choice for making broadcast applications;
good uniformity; best suited to flat, smooth terrain
Define boomless sprayers - <CORRECT ANSWER >>Also used for broadcast applications; less
uniformity than boom sprayers; use off-center nozzles or spray heads
Define hose and reel sprayers - <CORRECT ANSWER >>For spot, base, and leaf applications;
amount of spray required depends on size, shape, and leaf density; also good for chemical
trimming; much less uniform
What two things does droplet size impact? - <CORRECT ANSWER >>Coverage and drift potential
Spray droplets smaller than ______ microns are at high risk of drifting - <CORRECT ANSWER
>>150
What are the three ways that droplet sizes can be expressed? - <CORRECT ANSWER >>Volume
Median Diameter, percentage of spray volume in droplets smaller than 150 micros, and droplet
spectrum classification by categories (ASABE standard)
Define Volume Median Diameter - <CORRECT ANSWER >>Droplet diameter at which half of
spray volume is contained in smaller droplets and half of the spray volume is contained in larger
droplets
What is the Volume Median Diameter range for fine particles? - <CORRECT ANSWER >>106-235
microns
What is the Volume Median Diameter range for medium particles? - <CORRECT ANSWER
>>236-340 microns
What is the Volume Median Diameter range for coarse particles? - <CORRECT ANSWER >>341-
403 microns
RIGHTS-OF-WAY EXAM QUESTIONS
AND WELL ELABORATED ANSWERS
LATEST VERSION | A+
GRADED|NEW!!{REVISED}
Define compressed-air sprayers - <CORRECT ANSWER >>Pump compresses air, allowing it to be
sprayed; single stream of spray with large droplets; hand-held or shoulder strap
Define backpack sprayers - <CORRECT ANSWER >>Hand-operated piston or diaphragm pump;
holds more gallons and is better for long-term work
What are the two types of nozzles for manual sprayers? - <CORRECT ANSWER >>Adjustable
(hallow cone, straight stream) and flat fan or flooding
Define effective sprayed width - <CORRECT ANSWER >>The distance between spray passes
Pressure ____________ (increases/decreases) as material is sprayed - <CORRECT ANSWER
>>Decreases
How do you maintain pressure as material is sprayed? - <CORRECT ANSWER >>Re-pressurize
frequently, use a pressure gauge, and use a pressure-regulating valve
Define pesticide injection equipment - <CORRECT ANSWER >>Pesticide injected directly into
plant's vascular system; requires active transpiring
What is an advantage of injection equiptment? - <CORRECT ANSWER >>No drift
, Define boom sprayers - <CORRECT ANSWER >>Best choice for making broadcast applications;
good uniformity; best suited to flat, smooth terrain
Define boomless sprayers - <CORRECT ANSWER >>Also used for broadcast applications; less
uniformity than boom sprayers; use off-center nozzles or spray heads
Define hose and reel sprayers - <CORRECT ANSWER >>For spot, base, and leaf applications;
amount of spray required depends on size, shape, and leaf density; also good for chemical
trimming; much less uniform
What two things does droplet size impact? - <CORRECT ANSWER >>Coverage and drift potential
Spray droplets smaller than ______ microns are at high risk of drifting - <CORRECT ANSWER
>>150
What are the three ways that droplet sizes can be expressed? - <CORRECT ANSWER >>Volume
Median Diameter, percentage of spray volume in droplets smaller than 150 micros, and droplet
spectrum classification by categories (ASABE standard)
Define Volume Median Diameter - <CORRECT ANSWER >>Droplet diameter at which half of
spray volume is contained in smaller droplets and half of the spray volume is contained in larger
droplets
What is the Volume Median Diameter range for fine particles? - <CORRECT ANSWER >>106-235
microns
What is the Volume Median Diameter range for medium particles? - <CORRECT ANSWER
>>236-340 microns
What is the Volume Median Diameter range for coarse particles? - <CORRECT ANSWER >>341-
403 microns
