Illinois Department of Agriculture 3. Equipment & Drift Mitigation

Broadcast pesticide applications involve treating the ___ application site.
-innermost
-portion of the
-edges of the
-entire

For a boom sprayer, which of the following actions with INCREASE overlap between nozzle spray patterns?
-Increasing nozzle spacing
-Using a nozzle with a narrower fan angle
-Raising the boom

Why is agitation of the spray mix important?
-To ensure activation of pesticide ingredients
-To prevent product settling out of the bottom of the tank
-To dampen the pulsations of liquid pressure caused by the pump

For a given spray application rate, ____ droplets provide better coverage.
-larger
-smaller

Nozzles produce a range of droplet sizes known as that nozzle's Droplet Size ___.
-Continuum
-Spectrum
-Band

True or False? When clogged, metal objects like pocket knives and wire are the best way to clean a nozzle orifice.
True False

Which of the following is NOT a potential consequence of particle drift?
-Non-target damage
-Decreased pest control in the application site
-Increased efficacy of active ingredients

To minimize particle drift potential, utilize the ____ end of a nozzle's recommended pressure range.
-upper
-lower

To reduce particle drift potential, utilize a ___ spray height, if possible.
-lower
-higher

Since particle drift occurs downwind, one way to protect adjacent sensitive areas is to include a ____ zone on the downwind edge of the application site.
-overlap
-footer
-buffer

___ and ___ conditions increase the evaporation rate of spray droplets, increasing drift potential.
-Hot 
-Cool
-humid
-dry

Which of the following best describes an air temperature inversion?
-A set of unstable air conditions which greatly increase drift potential
-Warm air at ground level trapped beneath a layer of cooler air
-Cool air at ground level trapped beneath a layer of warmer air