3/9/26, 7:41 AM Iowa Herbicide Right of Way - Category 6, Iowa Pesticide EXAM, Complete Test || Questions and Answers (Verified Answers) (Latest…
Iowa Herbicide Right of Way - Category 6, Iowa
Pesticide EXAM, Complete Test || Questions and
Answers (Verified Answers) (Latest Update 2026)
UPDATE!!
Save
Terms in this set (83)
in early spring when sod has Growth regulator application is most effective
greened when applied:
A. in early spring when sod has greened
B. in late spring when sod has grown at least 2"
C. after 3 times mowing
D. in fall just prior to leaf fall
Both B and C Which procedures will help reduce herbicide drift?
A. Increasing spray pressure
B. Reducing spray pressure
C. Hanging nozzles to a type which emits larger
droplets
D. Reducing height of boom
E. Both B and C
https://quizlet.com/1153484660/iowa-herbicide-right-of-way-category-6-iowa-pesticide-exam-complete-test-questions-and-answers-verified-answers-l… 1/17
,3/9/26, 7:41 AM Iowa Herbicide Right of Way - Category 6, Iowa Pesticide EXAM, Complete Test || Questions and Answers (Verified Answers) (Latest…
They do not damage grasses Phenoxy herbicides are widely used along
roadsides because:
A. They are effective on a wide variety of broadleaf
and woody species
B. They rarely damage plants in adjacent areas
C. They are high in human toxicity
D. They do not damage grasses
E. Both A and D
Dichlobenil Which of the following nonselective herbicides has
the longest period of control, when used at a given
site:
A. Bromacil
B. Dichlobenil
C. Prometon
D. Tebuthiuron
During early flowering When is the best time to treat many perennials
developing from an established root system?
Outside an area equal to twice the In order to avoid injury to nearby desirable trees;
height of the desirable trees persistent, nonselective herbicides such as Hyvar
should be applied:
A. Only in the fall
B. Outside the drip line of the desirable trees
C. At least 10 feet from the desirable trees
D. Outside an area equal to twice the height of the
desirable trees
E. A minimum of 1/2 mile from the desirable trees
https://quizlet.com/1153484660/iowa-herbicide-right-of-way-category-6-iowa-pesticide-exam-complete-test-questions-and-answers-verified-answers-l… 2/17
, 3/9/26, 7:41 AM Iowa Herbicide Right of Way - Category 6, Iowa Pesticide EXAM, Complete Test || Questions and Answers (Verified Answers) (Latest…
The bark prevents penetration of the Basal bark treatment is not recommended for
herbicide and reduces effectiveness wood species larger than 6" in diameter because:
A. The bark prevents penetration of the herbicide
and reduces effectiveness
B. The cost is prohibitive
C. There is a high risk of drift
D. None of the above
They can damage desirable plants at A major disadvantage of the phenoxy-herbicides is:
very low rates, making them A. They are non-selective herbicides
susceptible to drift damage B. They can damage desirable plants at very low
rates, making them susceptible to drift damage
C. They are highly toxic to wildlife
D. They persist in the soil for several years
Little effect is seen the year of Krenite is different from most brush herbicides
application because:
A. It can be applied either to the foliage or the soil
B. Little effect is seen the year of application
C. Both A and B
D. None of the above
Wettable powders Which of the following formulations do not
dissolve in water?
A. Wettable powders
B. Soluble powders
C. Emulsifiable concentrate
D. All of the above dissolve in water
10 Herbicide spraying can be performed, as a general
rule, until wind speed exceeds ___ miles per hour.
Leaching The downward movements of pesticides in the soil
is called _____.
https://quizlet.com/1153484660/iowa-herbicide-right-of-way-category-6-iowa-pesticide-exam-complete-test-questions-and-answers-verified-answers-l… 3/17
Iowa Herbicide Right of Way - Category 6, Iowa
Pesticide EXAM, Complete Test || Questions and
Answers (Verified Answers) (Latest Update 2026)
UPDATE!!
Save
Terms in this set (83)
in early spring when sod has Growth regulator application is most effective
greened when applied:
A. in early spring when sod has greened
B. in late spring when sod has grown at least 2"
C. after 3 times mowing
D. in fall just prior to leaf fall
Both B and C Which procedures will help reduce herbicide drift?
A. Increasing spray pressure
B. Reducing spray pressure
C. Hanging nozzles to a type which emits larger
droplets
D. Reducing height of boom
E. Both B and C
https://quizlet.com/1153484660/iowa-herbicide-right-of-way-category-6-iowa-pesticide-exam-complete-test-questions-and-answers-verified-answers-l… 1/17
,3/9/26, 7:41 AM Iowa Herbicide Right of Way - Category 6, Iowa Pesticide EXAM, Complete Test || Questions and Answers (Verified Answers) (Latest…
They do not damage grasses Phenoxy herbicides are widely used along
roadsides because:
A. They are effective on a wide variety of broadleaf
and woody species
B. They rarely damage plants in adjacent areas
C. They are high in human toxicity
D. They do not damage grasses
E. Both A and D
Dichlobenil Which of the following nonselective herbicides has
the longest period of control, when used at a given
site:
A. Bromacil
B. Dichlobenil
C. Prometon
D. Tebuthiuron
During early flowering When is the best time to treat many perennials
developing from an established root system?
Outside an area equal to twice the In order to avoid injury to nearby desirable trees;
height of the desirable trees persistent, nonselective herbicides such as Hyvar
should be applied:
A. Only in the fall
B. Outside the drip line of the desirable trees
C. At least 10 feet from the desirable trees
D. Outside an area equal to twice the height of the
desirable trees
E. A minimum of 1/2 mile from the desirable trees
https://quizlet.com/1153484660/iowa-herbicide-right-of-way-category-6-iowa-pesticide-exam-complete-test-questions-and-answers-verified-answers-l… 2/17
, 3/9/26, 7:41 AM Iowa Herbicide Right of Way - Category 6, Iowa Pesticide EXAM, Complete Test || Questions and Answers (Verified Answers) (Latest…
The bark prevents penetration of the Basal bark treatment is not recommended for
herbicide and reduces effectiveness wood species larger than 6" in diameter because:
A. The bark prevents penetration of the herbicide
and reduces effectiveness
B. The cost is prohibitive
C. There is a high risk of drift
D. None of the above
They can damage desirable plants at A major disadvantage of the phenoxy-herbicides is:
very low rates, making them A. They are non-selective herbicides
susceptible to drift damage B. They can damage desirable plants at very low
rates, making them susceptible to drift damage
C. They are highly toxic to wildlife
D. They persist in the soil for several years
Little effect is seen the year of Krenite is different from most brush herbicides
application because:
A. It can be applied either to the foliage or the soil
B. Little effect is seen the year of application
C. Both A and B
D. None of the above
Wettable powders Which of the following formulations do not
dissolve in water?
A. Wettable powders
B. Soluble powders
C. Emulsifiable concentrate
D. All of the above dissolve in water
10 Herbicide spraying can be performed, as a general
rule, until wind speed exceeds ___ miles per hour.
Leaching The downward movements of pesticides in the soil
is called _____.
https://quizlet.com/1153484660/iowa-herbicide-right-of-way-category-6-iowa-pesticide-exam-complete-test-questions-and-answers-verified-answers-l… 3/17
