QUESTIONS AND ANSWERS WITH COMPLETE
SOLUTIONS VERIFIED
What is a vegetative structure that is also one of the main ways Canada thistle
spreads?
Root
What is the most likely problem that can occur from failing to clean out a
herbicide sprayer before starting a new job?
Injury to desirable vegetation
Which type of plant (Annual, perennial, biennial) can sprout from creeping roots?
Perennial
What is the biggest contributor to the spread of mile-a-minute?
Seeds are spread over local and wider areas primarily by birds and ants
What is the most likely cause of decreased spray output through the nozzles
during operations?
Lines or screen plugged
If a herbicide label lists one set of PPE under "Precautionary Statements" and
another set in a section about Worker Protection Standards, which set does an
applicator need to follow when applying the herbicide to the right-of-way?
The set under "Precautionary Statements"
, A herbicide label directs the user to avoid spraying onto hot, impervious surfaces
or when air temperature exceeds 85F. What potential problem is the label trying
to indicate?
Volatility
Spray nozzle performance depends on (3):
nozzle type, distance of nozzle from target, operating pressure
Types of nozzle tips that are evenly spaced on booms include (2):
regular flat fan & whirl chamber
Nozzles that should be angled 15-45 degrees from horizontal include (2):
Raindrop & Whirl chamber
An applicator device that rubs the herbicide on the leaf surface is:
wiping applicator
A commonly used nozzle for boomless spraying which produces a flat fan pattern
is:
off-center nozzle
Mechanical spray devices for boomless spraying include (3):
Radiarc, Directa-Spra, Vibrating clusters of straight stream tips
A boomless spray device that contains a group of straight stream tips, like
fingers on your hand, and that oscillates is the:
Radiarc
A spraying device that uses a grooved spinning cup to break that spray stream
into uniform droplets and applies low gallons per acres is the:
CDA (Controlled Droplet Applicator or Rotary-Cup Atomizer)