Iowa Herbicide Right of Way - Category 6 – 2026-2027
ACTUAL EXAM NEW ALL QUESTIONS AND 100%
CORRECT ANSWERS||BRABD NEW!!
Growth regulator application is most effective 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 - ANSWER-in early spring
when sod has greened
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 - ANSWER-Both B and C
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 - ANSWER-They do not damage grasses
,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 - ANSWER-Dichlobenil
When is the best time to treat many perennials developing
from an established root system? - ANSWER-During early
flowering
In order to avoid injury to nearby 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 -
ANSWER-Outside an area equal to twice the height of the
desirable trees
Basal bark treatment is not recommended for wood
species larger than 6" in diameter because:
A. The bark prevents penetration of the herbicide and
reduces effectiveness
B. The cost is prohibitive
ACTUAL EXAM NEW ALL QUESTIONS AND 100%
CORRECT ANSWERS||BRABD NEW!!
Growth regulator application is most effective 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 - ANSWER-in early spring
when sod has greened
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 - ANSWER-Both B and C
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 - ANSWER-They do not damage grasses
,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 - ANSWER-Dichlobenil
When is the best time to treat many perennials developing
from an established root system? - ANSWER-During early
flowering
In order to avoid injury to nearby 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 -
ANSWER-Outside an area equal to twice the height of the
desirable trees
Basal bark treatment is not recommended for wood
species larger than 6" in diameter because:
A. The bark prevents penetration of the herbicide and
reduces effectiveness
B. The cost is prohibitive
