RIGHT-OF-WAY PESTICIDE EXAM | 2026 UPDATE |
QUESTIONS AND ANSWERS | WITH COMPLETE
SOLUTION
Root-absorbed herbicides are more effective when applied postemergence. T
or F Answer - False
Define contact herbicide Answer - kills where it directly contacts. Controls
annual and biennial
Define systemic herbicide 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 Answer - True
What is temperature inversion and how can it affect pesticide drift? 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 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? Answer - systemic
, How can leaf shape affect herbicidal action Answer - herbicides will runoff
narrow and upright leaves. Broad leaves hold herbicide longer
What climatic factors affect herbicides Answer - humidity, light, precipitation,
wind, temp, length of growing season
what are the five categories of selective herbicide applications 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. Answer -
low volume ground foliage, high ground foliage, aerial
What are the differences between low volume ground foliage and high volume
ground foliage treatments? 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 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 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 Answer - False
QUESTIONS AND ANSWERS | WITH COMPLETE
SOLUTION
Root-absorbed herbicides are more effective when applied postemergence. T
or F Answer - False
Define contact herbicide Answer - kills where it directly contacts. Controls
annual and biennial
Define systemic herbicide 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 Answer - True
What is temperature inversion and how can it affect pesticide drift? 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 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? Answer - systemic
, How can leaf shape affect herbicidal action Answer - herbicides will runoff
narrow and upright leaves. Broad leaves hold herbicide longer
What climatic factors affect herbicides Answer - humidity, light, precipitation,
wind, temp, length of growing season
what are the five categories of selective herbicide applications 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. Answer -
low volume ground foliage, high ground foliage, aerial
What are the differences between low volume ground foliage and high volume
ground foliage treatments? 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 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 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 Answer - False
