Right-of-way pesticide Exam 2023 with
correct Answers
Root-absorbed herbicides are more effective when applied postemergence. T or F -
CORRECT ANSWER- False
Define contact herbicide - CORRECT ANSWER- kills where it directly contacts.
Controls annual and biennial
Define systemic herbicide - CORRECT ANSWER- used for perennial weeds. Moves
throughout the plant
Temperature, moisture, soil-type and rate of application influence the persistence of a
herbicide. T or F - CORRECT ANSWER- True
What is temperature inversion and how can it affect pesticide drift? - CORRECT
ANSWER- Temp inversion is when ground air is 2-5 deg cooler than air above it. It
increases drift deposits
What is the difference between a selective and non-selective herbicide - CORRECT
ANSWER- selective doesn't kill surround veg. non-selective removes most veg
If a plant's growing points are below the soil surface, which type of herbicide will provide
better control: contact or systemic? - CORRECT ANSWER- systemic
How can leaf shape affect herbicidal action - CORRECT ANSWER- herbicides will
runoff narrow and upright leaves. Broad leaves hold herbicide longer
What climatic factors affect herbicides - CORRECT ANSWER- humidity, light,
precipitation, wind, temp, length of growing season
, what are the five categories of selective herbicide applications - CORRECT ANSWER-
foliage spraying, basal spraying, granular/pellet, spotgun/exact dose, cut surface
herbicide
What are the 3 basic foliage spray treatments used in right-of-ways. - CORRECT
ANSWER- low volume ground foliage, high ground foliage, aerial
What are the differences between low volume ground foliage and high volume ground
foliage treatments? - CORRECT ANSWER- High volume has a specific concentration
that is applied instead of rate per acre. Foliage is prayed to a point where additional
spray begins to drip of treated leaves. Larger volumes of mix. Amount applied will very a
lot
What steps can you take to avoid drift and accidental spraying of non-target plants
when using high volume ground foliage treatments - CORRECT ANSWER- avoid spray
pattern being too high/far, use low pressure, avoid unfavorable weather, spray parallel
to edge of right-of-way
What is the difference between conventional basal spraying and low volume basal
spraying - CORRECT ANSWER- low volume uses a more concentrated herbicide mix
In low volume basal spraying stems are completely encircled and wet to rundown. T or
F - CORRECT ANSWER- False
What are the advantages and disadvantages of granular and pellet applications -
CORRECT ANSWER- Advantage: faster application time, more uniform results.
Disadvantage: damage to non-target veg
what are "spotgun" applications? - CORRECT ANSWER- hand held or backpack
sprayer that delivers a pre-measured dose of concentrated herbicide to the base of
target vegetation.
correct Answers
Root-absorbed herbicides are more effective when applied postemergence. T or F -
CORRECT ANSWER- False
Define contact herbicide - CORRECT ANSWER- kills where it directly contacts.
Controls annual and biennial
Define systemic herbicide - CORRECT ANSWER- used for perennial weeds. Moves
throughout the plant
Temperature, moisture, soil-type and rate of application influence the persistence of a
herbicide. T or F - CORRECT ANSWER- True
What is temperature inversion and how can it affect pesticide drift? - CORRECT
ANSWER- Temp inversion is when ground air is 2-5 deg cooler than air above it. It
increases drift deposits
What is the difference between a selective and non-selective herbicide - CORRECT
ANSWER- selective doesn't kill surround veg. non-selective removes most veg
If a plant's growing points are below the soil surface, which type of herbicide will provide
better control: contact or systemic? - CORRECT ANSWER- systemic
How can leaf shape affect herbicidal action - CORRECT ANSWER- herbicides will
runoff narrow and upright leaves. Broad leaves hold herbicide longer
What climatic factors affect herbicides - CORRECT ANSWER- humidity, light,
precipitation, wind, temp, length of growing season
, what are the five categories of selective herbicide applications - CORRECT ANSWER-
foliage spraying, basal spraying, granular/pellet, spotgun/exact dose, cut surface
herbicide
What are the 3 basic foliage spray treatments used in right-of-ways. - CORRECT
ANSWER- low volume ground foliage, high ground foliage, aerial
What are the differences between low volume ground foliage and high volume ground
foliage treatments? - CORRECT ANSWER- High volume has a specific concentration
that is applied instead of rate per acre. Foliage is prayed to a point where additional
spray begins to drip of treated leaves. Larger volumes of mix. Amount applied will very a
lot
What steps can you take to avoid drift and accidental spraying of non-target plants
when using high volume ground foliage treatments - CORRECT ANSWER- avoid spray
pattern being too high/far, use low pressure, avoid unfavorable weather, spray parallel
to edge of right-of-way
What is the difference between conventional basal spraying and low volume basal
spraying - CORRECT ANSWER- low volume uses a more concentrated herbicide mix
In low volume basal spraying stems are completely encircled and wet to rundown. T or
F - CORRECT ANSWER- False
What are the advantages and disadvantages of granular and pellet applications -
CORRECT ANSWER- Advantage: faster application time, more uniform results.
Disadvantage: damage to non-target veg
what are "spotgun" applications? - CORRECT ANSWER- hand held or backpack
sprayer that delivers a pre-measured dose of concentrated herbicide to the base of
target vegetation.
