RIGHT OF WAY PORTION OF QAC TEST NEWEST 2024
ACTUAL EXAM 110 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+
why are plant growth regulators used in right of ways? - ANSWER: to maintain
desired height of turf around guardrails
what type of herbicide is used for total vegetation control (tvc) used around
guardrails? - ANSWER: residual, nonselective herbicides
what is girdling? - ANSWER: cutting a grove or notch into the trunk of a tree to
interrupt the flow of sap between roots and crown. can be done by cutting a ring
around a woody plant through the bark and sapwood (cambium)
what is grubbing? - ANSWER: uprooting plants by pulling or digging
why are growth regulators used instead of herbicide in some areas? - ANSWER: they
are used to slow vegetation growth in areas where brownouts from herbicides are
unacceptable. such as along steep slopes and cemeteries
what growth regulators are typically used and why - ANSWER: maleic hyrazide,
mefluidide, and fluprimidal. these compounds are used in areas where brownout
from herbicides are unacceptable
how do photosynthetic inhibitor herbicides work? - ANSWER: they translocate in the
xylem from the roots to the older leaves
what are meristematic tissues? - ANSWER: the growing points of the plants
why are ACCase inhibitors (lipid biosynthesis inhibitors) used? - ANSWER: they
selectively control grass but broadleaf plants are unaffected by them
how are dinitroanilines used to control annual grasses and small-seeded broadleaf
lants - ANSWER: they are soil applied
how do herbicide-resistant weeds develop? - ANSWER: herbicide controls the
majority of plants and only those that possess a resistant trait can survive and
produce seed for future generations (natural selection)
what are the two mechanisms that allow plants to become herbicide resistant? -
ANSWER: the target site is somewhat altered and the herbicide molecule cannot
exert toxin. the weed is able to metabolize the herbicide or make it inactive
, what is frilling - ANSWER: series of downward angled cuts make completely around
the tree, leaving partially severed bark and wood attached at the bottom. it is
typically performed with a hatchet or axe.
what steps can be taken to minimize herbicide resistant weeds? - ANSWER: all of the
above
what is herbicidal activity? - ANSWER: when a particular herbicide binds to a target
site within the plant and exerts a lethal effect
what are the different ways that herbicides can be applied to plants - ANSWER: onto
leaves (foliar treatment) or onto stem or trunk (frill, girdle, basal-bark or cutsurface
treatment)
what are the methods of killing standing trees without herbicide - ANSWER: frilling
and girdling
how is basal bark treatments performed? - ANSWER: herbicide is sprayed on small
trees and shrubs on the lower 12-18 inches of bark. it is most effective on trees
smaller than 4-6 inches in diameter
how are soil treatments (basal soil) herbicides used? - ANSWER: they are applied
within the dripline of target species so that herbicide can move by rainfall into the
root zone.
why are soil treatment herbicides not used in many areas? - ANSWER: they are quite
persistent and mobile in water, so they can run off and leech into surface or
underground water sources.
when is the greatest potential for spray drift? - ANSWER: when wind velocity is
greater than 10 mph or when the wind is blowing toward sensitive plants or critical
areas.
when should you not apply low volume sprays (those having smaller droplet size)? -
ANSWER: during periods of high temperature or low humidity (since droplets
evaporate easier)
when are cut stamp applications of herbicide used? - ANSWER: they are used to
control trees with thick barks or trunks greater than 5 inches in diameter
how do you avoid the pressure decreasing as the liquid is sprayed from a
compressed air sprayer? - ANSWER: fill the tank only 2/3 full with spray material and
repressurize the tank frequently
what are considerations for choosing equipment for right of way applications -
ANSWER: all of the above
ACTUAL EXAM 110 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+
why are plant growth regulators used in right of ways? - ANSWER: to maintain
desired height of turf around guardrails
what type of herbicide is used for total vegetation control (tvc) used around
guardrails? - ANSWER: residual, nonselective herbicides
what is girdling? - ANSWER: cutting a grove or notch into the trunk of a tree to
interrupt the flow of sap between roots and crown. can be done by cutting a ring
around a woody plant through the bark and sapwood (cambium)
what is grubbing? - ANSWER: uprooting plants by pulling or digging
why are growth regulators used instead of herbicide in some areas? - ANSWER: they
are used to slow vegetation growth in areas where brownouts from herbicides are
unacceptable. such as along steep slopes and cemeteries
what growth regulators are typically used and why - ANSWER: maleic hyrazide,
mefluidide, and fluprimidal. these compounds are used in areas where brownout
from herbicides are unacceptable
how do photosynthetic inhibitor herbicides work? - ANSWER: they translocate in the
xylem from the roots to the older leaves
what are meristematic tissues? - ANSWER: the growing points of the plants
why are ACCase inhibitors (lipid biosynthesis inhibitors) used? - ANSWER: they
selectively control grass but broadleaf plants are unaffected by them
how are dinitroanilines used to control annual grasses and small-seeded broadleaf
lants - ANSWER: they are soil applied
how do herbicide-resistant weeds develop? - ANSWER: herbicide controls the
majority of plants and only those that possess a resistant trait can survive and
produce seed for future generations (natural selection)
what are the two mechanisms that allow plants to become herbicide resistant? -
ANSWER: the target site is somewhat altered and the herbicide molecule cannot
exert toxin. the weed is able to metabolize the herbicide or make it inactive
, what is frilling - ANSWER: series of downward angled cuts make completely around
the tree, leaving partially severed bark and wood attached at the bottom. it is
typically performed with a hatchet or axe.
what steps can be taken to minimize herbicide resistant weeds? - ANSWER: all of the
above
what is herbicidal activity? - ANSWER: when a particular herbicide binds to a target
site within the plant and exerts a lethal effect
what are the different ways that herbicides can be applied to plants - ANSWER: onto
leaves (foliar treatment) or onto stem or trunk (frill, girdle, basal-bark or cutsurface
treatment)
what are the methods of killing standing trees without herbicide - ANSWER: frilling
and girdling
how is basal bark treatments performed? - ANSWER: herbicide is sprayed on small
trees and shrubs on the lower 12-18 inches of bark. it is most effective on trees
smaller than 4-6 inches in diameter
how are soil treatments (basal soil) herbicides used? - ANSWER: they are applied
within the dripline of target species so that herbicide can move by rainfall into the
root zone.
why are soil treatment herbicides not used in many areas? - ANSWER: they are quite
persistent and mobile in water, so they can run off and leech into surface or
underground water sources.
when is the greatest potential for spray drift? - ANSWER: when wind velocity is
greater than 10 mph or when the wind is blowing toward sensitive plants or critical
areas.
when should you not apply low volume sprays (those having smaller droplet size)? -
ANSWER: during periods of high temperature or low humidity (since droplets
evaporate easier)
when are cut stamp applications of herbicide used? - ANSWER: they are used to
control trees with thick barks or trunks greater than 5 inches in diameter
how do you avoid the pressure decreasing as the liquid is sprayed from a
compressed air sprayer? - ANSWER: fill the tank only 2/3 full with spray material and
repressurize the tank frequently
what are considerations for choosing equipment for right of way applications -
ANSWER: all of the above
