1|Page
Ohio Pesticide Applicator Certification Category 6a –
Ornamental Weed Control Exam||Verified Questions
and Correct Answers with EXPLANATIONS LATEST
THIS YEAR.pdf||NEWEST EXAM!!!
Soil-applied herbicide performance is affected by
A. Soil Texture
B. Organic matter content of soil
C. Soil pH
D. Soil mositure
E. Soil Tillage
F. All of the above - Answer-Answer F
Soil applied herbicides are more likely to injure crops in
A. Sandy soils
B. High organic soils
C. Clay Soils
D. All of the above - Answer-Answer A
If atrazine is the only herbicide used on continuous corn,
what weed will most likely become a problem
,2|Page
A. Pigweed
B. Common ragwee
C. Fall panicum
D. All of the above - Answer-Answer C
High pH soils allow triazine herbicides such as atrazine
and simazine to
A. Be more active
B. Provide better weed control
C. Risk Crop Injury
D. All of the above - Answer-Answer D
Herbicides an drift to non-target crops and result in illegal
residue, even if the crop is not killed
A. True
B. False - Answer-Answer A
Herbicides suited for early replant application have
A. Short residual soil activity
B. Low solubility
C. High solubility
,3|Page
D. All of the above - Answer-Answer B
Herbicides the are applied to the soil surface after the crop
is planed but before the crop seedlings appear above the
ground are called.
A. Early preplant
B. Preplant incorporated
C. Preemergence
D. Postemergence - Answer-Answer C
What factors make post emergence week control with
herbicides less effective
A. Small weeds
B. Drought conditions
C. High temperatures
D. High humidity - Answer-Answer B
What factor or practice increases the effectiveness of post
emergence herbicides without increasing the chance of
crop injury.
A Smaller weeds
, 4|Page
B. High temperatures
C. High relative humidity
D. Use of an adjuvant such as surfactant, crop oil, or
fertilizer solution with the spray solution - Answer-Answer
A
In general weeds are easiest to control post emergence
when they are
A. In Flower
B. Young
C. Small
D. Fully Mature
E. B and C - Answer-Answer E
Which of the following are effective cultural weed control
practices
A. Rotating crops
B. Planing at the proper time to again an adequate plan
stand
C. Assuring adequate drainage for optimum crop grown
D. Preventing weed seeds from getting on fields by
cleaning machinery between fields
E. All of the above - Answer-Answer E
Ohio Pesticide Applicator Certification Category 6a –
Ornamental Weed Control Exam||Verified Questions
and Correct Answers with EXPLANATIONS LATEST
THIS YEAR.pdf||NEWEST EXAM!!!
Soil-applied herbicide performance is affected by
A. Soil Texture
B. Organic matter content of soil
C. Soil pH
D. Soil mositure
E. Soil Tillage
F. All of the above - Answer-Answer F
Soil applied herbicides are more likely to injure crops in
A. Sandy soils
B. High organic soils
C. Clay Soils
D. All of the above - Answer-Answer A
If atrazine is the only herbicide used on continuous corn,
what weed will most likely become a problem
,2|Page
A. Pigweed
B. Common ragwee
C. Fall panicum
D. All of the above - Answer-Answer C
High pH soils allow triazine herbicides such as atrazine
and simazine to
A. Be more active
B. Provide better weed control
C. Risk Crop Injury
D. All of the above - Answer-Answer D
Herbicides an drift to non-target crops and result in illegal
residue, even if the crop is not killed
A. True
B. False - Answer-Answer A
Herbicides suited for early replant application have
A. Short residual soil activity
B. Low solubility
C. High solubility
,3|Page
D. All of the above - Answer-Answer B
Herbicides the are applied to the soil surface after the crop
is planed but before the crop seedlings appear above the
ground are called.
A. Early preplant
B. Preplant incorporated
C. Preemergence
D. Postemergence - Answer-Answer C
What factors make post emergence week control with
herbicides less effective
A. Small weeds
B. Drought conditions
C. High temperatures
D. High humidity - Answer-Answer B
What factor or practice increases the effectiveness of post
emergence herbicides without increasing the chance of
crop injury.
A Smaller weeds
, 4|Page
B. High temperatures
C. High relative humidity
D. Use of an adjuvant such as surfactant, crop oil, or
fertilizer solution with the spray solution - Answer-Answer
A
In general weeds are easiest to control post emergence
when they are
A. In Flower
B. Young
C. Small
D. Fully Mature
E. B and C - Answer-Answer E
Which of the following are effective cultural weed control
practices
A. Rotating crops
B. Planing at the proper time to again an adequate plan
stand
C. Assuring adequate drainage for optimum crop grown
D. Preventing weed seeds from getting on fields by
cleaning machinery between fields
E. All of the above - Answer-Answer E
