ILLINOIS SEED TREATMENT 2025/2026 QUESTIONS WITH
ANSWERS GRADED A+
✔✔Captan is which type of fungicide treatment when used to control seed borne fungi?
A. Protectant
B. Surface disinfectant
C. Systematic disinfectant
D. All of the above
E. None of the above - ✔✔B. Surface disinfectant
✔✔Fungicides are marked under an assortment of names. Which of the following
statements are true about fungicide names?
A. Trade names are given to the product by the manufacturer
B. Common names are simple names given to the chemical in lieu of more complicated
chemical names
C. The trade name of carbon Vitavax
D. An example of a fungicide chemical name is 5.6-dihydro-2-methyl-1,4 oxathiin-3-
carboxanilide
E. All of the above - ✔✔E. All of the above
✔✔Which of the following statements concerning "broad spectrum" fungicides is false?
A. Most fungicides are useful in controlling a relatively narrow group of fungi
B. Fungicide mixture expand control to a much broader group of fungi are called "broad
spectrum" fungicides
C. A common practice is to use mixtures of different seed treatment fungicides
D. All broad-spectrum fungicides have low toxicity
E. Vitavax 200, a common broad-spectrum fungicide contains two fungicides, thiam and
carboxin - ✔✔D
✔✔Which of the following is not a fungicide seed treatment formulation?
A. Solutions (S)
B. Flowables (F) and Liquids (L)
C. Emulsifiable Concentrates (EC)
D. Dusts (D) and Wettable Powders (W)
E. All of the above - ✔✔A. Solutions
✔✔Pesticide treated seed requires special labeling if it is going to be sold.
T/F? - ✔✔True
✔✔Leftover treated seed can be mixed into animal feeds.
T/F? - ✔✔False
✔✔Which of the following fungicides are excellent, low toxicity, broad spectrum, largely
protective contact fungicides used to control many plant diseases on barley, corn, oats,
, rye, sorghum, soybeans, and wheat? They are registered for use as wettable powders
or flowable liquids.
A. Captan + Carboxin
B. Captan + Lindane
C. Mancozeb and Maneb
D. A & B
E. None of the above - ✔✔C. Mancozeb and Maneb
✔✔Which of the following fungicides is commonly combined with an insecticide such as
Diazinon or Lindane formulated as a planter box treatment?
A. Captan
B. Benlate
C. Carboxin
D. Maneb
E. Thiram - ✔✔A. Captan
✔✔Which of the following is a systematic fungicide available as a seed treatment for the
specific control of Pythium and Phytophthora?
A. Thiram
B. Metalaxyl
C. Benomyl
D. Diazinon
E. Lindane - ✔✔B. Metalaxyl
✔✔Which of the following organisms cause damping-off in plants?
A. Fusarium
B. Pythium
C. Phytophthora
D. Rhizoctonia
E. All of the above - ✔✔E. All of the above
✔✔Damping-off disease is characterized by:
A. Bare spaces where seed rotted or young seedlings were killed
B. Poor stands associated with fungi attacking see in cold, wet soils when germination
is slow
C. Wilting and death of seedling after they emerge from the soil
D. Brown water-soaked, soft sunken areas on seedling stem near the soil surface
E. All of the above - ✔✔E. All of the above
✔✔Corn seedling diseases are more prevalent in cold wet soils than in soil with
temperatures above 55 degrees.
T/F? - ✔✔True
✔✔Fungicide seed treatment is recommended for all seed corn to prevent or reduce
seed decay and seedling blights.
ANSWERS GRADED A+
✔✔Captan is which type of fungicide treatment when used to control seed borne fungi?
A. Protectant
B. Surface disinfectant
C. Systematic disinfectant
D. All of the above
E. None of the above - ✔✔B. Surface disinfectant
✔✔Fungicides are marked under an assortment of names. Which of the following
statements are true about fungicide names?
A. Trade names are given to the product by the manufacturer
B. Common names are simple names given to the chemical in lieu of more complicated
chemical names
C. The trade name of carbon Vitavax
D. An example of a fungicide chemical name is 5.6-dihydro-2-methyl-1,4 oxathiin-3-
carboxanilide
E. All of the above - ✔✔E. All of the above
✔✔Which of the following statements concerning "broad spectrum" fungicides is false?
A. Most fungicides are useful in controlling a relatively narrow group of fungi
B. Fungicide mixture expand control to a much broader group of fungi are called "broad
spectrum" fungicides
C. A common practice is to use mixtures of different seed treatment fungicides
D. All broad-spectrum fungicides have low toxicity
E. Vitavax 200, a common broad-spectrum fungicide contains two fungicides, thiam and
carboxin - ✔✔D
✔✔Which of the following is not a fungicide seed treatment formulation?
A. Solutions (S)
B. Flowables (F) and Liquids (L)
C. Emulsifiable Concentrates (EC)
D. Dusts (D) and Wettable Powders (W)
E. All of the above - ✔✔A. Solutions
✔✔Pesticide treated seed requires special labeling if it is going to be sold.
T/F? - ✔✔True
✔✔Leftover treated seed can be mixed into animal feeds.
T/F? - ✔✔False
✔✔Which of the following fungicides are excellent, low toxicity, broad spectrum, largely
protective contact fungicides used to control many plant diseases on barley, corn, oats,
, rye, sorghum, soybeans, and wheat? They are registered for use as wettable powders
or flowable liquids.
A. Captan + Carboxin
B. Captan + Lindane
C. Mancozeb and Maneb
D. A & B
E. None of the above - ✔✔C. Mancozeb and Maneb
✔✔Which of the following fungicides is commonly combined with an insecticide such as
Diazinon or Lindane formulated as a planter box treatment?
A. Captan
B. Benlate
C. Carboxin
D. Maneb
E. Thiram - ✔✔A. Captan
✔✔Which of the following is a systematic fungicide available as a seed treatment for the
specific control of Pythium and Phytophthora?
A. Thiram
B. Metalaxyl
C. Benomyl
D. Diazinon
E. Lindane - ✔✔B. Metalaxyl
✔✔Which of the following organisms cause damping-off in plants?
A. Fusarium
B. Pythium
C. Phytophthora
D. Rhizoctonia
E. All of the above - ✔✔E. All of the above
✔✔Damping-off disease is characterized by:
A. Bare spaces where seed rotted or young seedlings were killed
B. Poor stands associated with fungi attacking see in cold, wet soils when germination
is slow
C. Wilting and death of seedling after they emerge from the soil
D. Brown water-soaked, soft sunken areas on seedling stem near the soil surface
E. All of the above - ✔✔E. All of the above
✔✔Corn seedling diseases are more prevalent in cold wet soils than in soil with
temperatures above 55 degrees.
T/F? - ✔✔True
✔✔Fungicide seed treatment is recommended for all seed corn to prevent or reduce
seed decay and seedling blights.
