Illinois Pesticide Applicator Rights-Of-Way Test
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basal bark treatment - ✔✔spraying lower 12 - 18 inches of trunk with herbicides
when should basal bark treatment not be used - ✔✔bark is very wet or covered in snow/ice;
where runoff or leaching is possible
cut surface - ✔✔treating a cut stump with an herbicide after tree is cut
when should water based herbicides be used in cut surface - ✔✔immediately after cutting
tree; spray critical areas of stump
when should oil based herbicides be used in cut surface - ✔✔in the spring; spray entirety of
stump
basal soil - ✔✔soil treatments; applied within dripline of target species
foliar treatment - ✔✔applied to the foliage
factors that affect herbicide effectiveness - ✔✔if rainfall occurs; or using adjuvants with oil
to increase surface tension
compressed-air sprayers - ✔✔hold about 1-1/2 - 5 gallons; carried by hand or on shoulder
normal psi for compressed air sprayers - ✔✔20-60psi; if drops to 10psi then repressurize
, backpack sprayers - ✔✔like compressed sprayers but has straps for backpack; can get psi as
high as 150
Piston pumps can provide - ✔✔higher pressure but cannot be used with abrasive
formulations
diaphragm pumps cannot provide - ✔✔high pressure but can tolerate abrasive formulations
calibration of manual sprayers - ✔✔measure off area, spray area and measure amount of
water left in tank
injection equipment - ✔✔injects directly into plant; protect tree from insects/diseases; avoid
drift
boom sprayers - ✔✔useful for broadcast applications; good uniformity
boomless sprayers - ✔✔used for broadcast; not as uniform; use off-center nozzles
spray droplets smaller than _______ are at risk for drifting - ✔✔150 microns
VMD - ✔✔volume median diameter; droplet spectrum for sprays
extended range flat fan nozzles - ✔✔used for soil/foliar application; good coverage; outer
edges reduce volume; 15-60 psi
Pre-orifice flat fan nozzles - ✔✔uses pre-orifice to decrease pressure and make droplets
bigger; 30-60 psi
Questions, all Solved 100% Correct with Verified
Answers
basal bark treatment - ✔✔spraying lower 12 - 18 inches of trunk with herbicides
when should basal bark treatment not be used - ✔✔bark is very wet or covered in snow/ice;
where runoff or leaching is possible
cut surface - ✔✔treating a cut stump with an herbicide after tree is cut
when should water based herbicides be used in cut surface - ✔✔immediately after cutting
tree; spray critical areas of stump
when should oil based herbicides be used in cut surface - ✔✔in the spring; spray entirety of
stump
basal soil - ✔✔soil treatments; applied within dripline of target species
foliar treatment - ✔✔applied to the foliage
factors that affect herbicide effectiveness - ✔✔if rainfall occurs; or using adjuvants with oil
to increase surface tension
compressed-air sprayers - ✔✔hold about 1-1/2 - 5 gallons; carried by hand or on shoulder
normal psi for compressed air sprayers - ✔✔20-60psi; if drops to 10psi then repressurize
, backpack sprayers - ✔✔like compressed sprayers but has straps for backpack; can get psi as
high as 150
Piston pumps can provide - ✔✔higher pressure but cannot be used with abrasive
formulations
diaphragm pumps cannot provide - ✔✔high pressure but can tolerate abrasive formulations
calibration of manual sprayers - ✔✔measure off area, spray area and measure amount of
water left in tank
injection equipment - ✔✔injects directly into plant; protect tree from insects/diseases; avoid
drift
boom sprayers - ✔✔useful for broadcast applications; good uniformity
boomless sprayers - ✔✔used for broadcast; not as uniform; use off-center nozzles
spray droplets smaller than _______ are at risk for drifting - ✔✔150 microns
VMD - ✔✔volume median diameter; droplet spectrum for sprays
extended range flat fan nozzles - ✔✔used for soil/foliar application; good coverage; outer
edges reduce volume; 15-60 psi
Pre-orifice flat fan nozzles - ✔✔uses pre-orifice to decrease pressure and make droplets
bigger; 30-60 psi
