IOWA HERBICIDE RIGHT OF WAY CATEGORY 6
ACTUAL EXAM PAPER 2026 QUESTIONS WITH
ANSWERS GRADED A+
◉ asian honeysuckle. Answer: ( ) invasive shrub in woodlands. pg.15
◉ common buckthorn. Answer: ( ) is the only tree on the state's noxious
weed list. pg.15
◉ Poison ivy and Oriental bittersweets. Answer: ( ) are examples of
woody vines. pg.15
◉ Postemergence (foliar applied). Answer: the most common used
herbicides for right-of way situations are ( ) chemicals. pg.17
◉ ALS-inhibitors. Answer: ( ) are a group of herbicides used for
selective broadleaf weed control in right-of-ways. pg.18
◉ Growth regulator herbicides (also called synthetic auxins). Answer: ( )
are used primarily for broadleaf weed control. pg.19
, ◉ the EPSPS inhibitor herbicide, glyphosate,. Answer: ( ) is a common
herbicide used for nonselective vegetation control. pg.19
◉ herbicide resistance. Answer: ( ) is the ability of a weed species that
was once effectively controlled by a herbicide to survive spray
concentration that where previously effective. pg.20
◉ Foliar sprays. Answer: ( ) are herbicide applications made directly to
leafy portions of the plant. pg.23
◉ basal bark application. Answer: ( ) are generally effective on woody
species up to 6 inched (15 cm) in diameter
◉ basal bark application. Answer: ( ) direct the spray so it contacts the
lower portion of stems and trunks. pg.23
◉ 85 degrees Fahrenheit. Answer: Avoid using the ester formulation of
triclopyr products for basal bark application when the temperature is
expected to reach ( ) or higher. pg.24
◉ Cut-surface. Answer: are made to freshly cut stump surfaces. When a
tree, stalk , or woody vine is cut, there is a high probability that the
stump will re-sprout. pg.24
ACTUAL EXAM PAPER 2026 QUESTIONS WITH
ANSWERS GRADED A+
◉ asian honeysuckle. Answer: ( ) invasive shrub in woodlands. pg.15
◉ common buckthorn. Answer: ( ) is the only tree on the state's noxious
weed list. pg.15
◉ Poison ivy and Oriental bittersweets. Answer: ( ) are examples of
woody vines. pg.15
◉ Postemergence (foliar applied). Answer: the most common used
herbicides for right-of way situations are ( ) chemicals. pg.17
◉ ALS-inhibitors. Answer: ( ) are a group of herbicides used for
selective broadleaf weed control in right-of-ways. pg.18
◉ Growth regulator herbicides (also called synthetic auxins). Answer: ( )
are used primarily for broadleaf weed control. pg.19
, ◉ the EPSPS inhibitor herbicide, glyphosate,. Answer: ( ) is a common
herbicide used for nonselective vegetation control. pg.19
◉ herbicide resistance. Answer: ( ) is the ability of a weed species that
was once effectively controlled by a herbicide to survive spray
concentration that where previously effective. pg.20
◉ Foliar sprays. Answer: ( ) are herbicide applications made directly to
leafy portions of the plant. pg.23
◉ basal bark application. Answer: ( ) are generally effective on woody
species up to 6 inched (15 cm) in diameter
◉ basal bark application. Answer: ( ) direct the spray so it contacts the
lower portion of stems and trunks. pg.23
◉ 85 degrees Fahrenheit. Answer: Avoid using the ester formulation of
triclopyr products for basal bark application when the temperature is
expected to reach ( ) or higher. pg.24
◉ Cut-surface. Answer: are made to freshly cut stump surfaces. When a
tree, stalk , or woody vine is cut, there is a high probability that the
stump will re-sprout. pg.24
