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Illinois Field Crop Applicators Test EXAM 2026/2027
Actual Complete Real Verified Exam Questions and
Correct Answers (Verified Answers) Already Graded
A+||Newest Exam!!!
When scouting, where in the field should you sample? -
Answer-random
What are the 4 types of control measures used in an IPM?
- Answer-Cultural, Mechanical, Biological, Chemical
At what stage in the life-cycle of a Corn rootworm does it
prune and tunnel through the roots causing stalk lodging?
- Answer-Larvae
At what life-cycle stage does a corn rootworm cause ear
damage by feeding on the silks? - Answer-Adult
What are the economic thresholds when scouting for corn
rootworm beetles in corn? - Answer-When silks are green,
5 or more beetles per plant if silks are clipped within 1/2
inch of the ear tip.
,2|Page
What are the economic thresholds when scouting for corn
rootworm beetles in soy? - Answer-From late July to late
august at least 5 beetles per unbaited pherocon AM trap in
soybeans or .75 beetles per plant in non-rotated corn.
What damage does a black cutworm larvae do to corn
seedlings? - Answer-feed on the leaves and older larvae
cause leaf cutting leading to reduced stands.
What are 3 factors that have the most potential to lead to
black cutworm damage? - Answer-Crop debris, winter
annaul weeds, late planted
What is the recommended method for managing black
cutworms in IL? - Answer-rescue treatments when
necessary
What type of larvae causes whorl damage in 1st
generation, stalk tunneling damage in the 2nd generation
with possible ear tunneling and stalk rot? - Answer-
European corn borer
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Damages corn by coating the tassels and silks with
honeydew which reduces pollination. - Answer-Leaf Aphid
What insects have white, C-shaped, and about 1 inch long
larvea which can be differentiated by their raster patterns?
- Answer-Japanese beetle grubs and other white grubs.
They chew on the roots and root hairs of seedlings
resulting in irregular emergence, reduced stands, and
stunted or wilted plants. Injured plants may turn purple
because they cannot take up phosphorus. - Answer-
Japanese beetle grubs
An integrated pest management program is based upon
what factors? - Answer-various, economical,
environmentally sound, socially acceptable
What is the number of pests that should be controlled to
prevent economic damage from occurring? - Answer-
Economic threshhold
Number of pests, costs of various treatments, expected
yield, and expected grain value are all factors to
determine.... - Answer-Economic Injury level
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What should be done if scouting detects an important
pest, but its numbers do not reach the economic
threshold? - Answer-Do not treat, but scout again later.
They are metallic looking green beetles that are 3/8 to 1/2
and inch long with coppery wing covers. - Answer-
Japanese beetle adults.
What kind of damage do Japanese beetle adults cause? -
Answer-feed on the silks
1/4 inch beetle, black triangle on neck just below the
head? - Answer-adult bean leaf beetle.
When bean leaf beetles feed on cotyledons and first true
leaves what is the amount of beetles per foot of row that is
the economic threshold? - Answer-16 or more
When bean leaf beetles eat holes in leaves during the
vegetative growth stage what is the percent defoliation
that is the economic threshold? - Answer-30-40%
Illinois Field Crop Applicators Test EXAM 2026/2027
Actual Complete Real Verified Exam Questions and
Correct Answers (Verified Answers) Already Graded
A+||Newest Exam!!!
When scouting, where in the field should you sample? -
Answer-random
What are the 4 types of control measures used in an IPM?
- Answer-Cultural, Mechanical, Biological, Chemical
At what stage in the life-cycle of a Corn rootworm does it
prune and tunnel through the roots causing stalk lodging?
- Answer-Larvae
At what life-cycle stage does a corn rootworm cause ear
damage by feeding on the silks? - Answer-Adult
What are the economic thresholds when scouting for corn
rootworm beetles in corn? - Answer-When silks are green,
5 or more beetles per plant if silks are clipped within 1/2
inch of the ear tip.
,2|Page
What are the economic thresholds when scouting for corn
rootworm beetles in soy? - Answer-From late July to late
august at least 5 beetles per unbaited pherocon AM trap in
soybeans or .75 beetles per plant in non-rotated corn.
What damage does a black cutworm larvae do to corn
seedlings? - Answer-feed on the leaves and older larvae
cause leaf cutting leading to reduced stands.
What are 3 factors that have the most potential to lead to
black cutworm damage? - Answer-Crop debris, winter
annaul weeds, late planted
What is the recommended method for managing black
cutworms in IL? - Answer-rescue treatments when
necessary
What type of larvae causes whorl damage in 1st
generation, stalk tunneling damage in the 2nd generation
with possible ear tunneling and stalk rot? - Answer-
European corn borer
,3|Page
Damages corn by coating the tassels and silks with
honeydew which reduces pollination. - Answer-Leaf Aphid
What insects have white, C-shaped, and about 1 inch long
larvea which can be differentiated by their raster patterns?
- Answer-Japanese beetle grubs and other white grubs.
They chew on the roots and root hairs of seedlings
resulting in irregular emergence, reduced stands, and
stunted or wilted plants. Injured plants may turn purple
because they cannot take up phosphorus. - Answer-
Japanese beetle grubs
An integrated pest management program is based upon
what factors? - Answer-various, economical,
environmentally sound, socially acceptable
What is the number of pests that should be controlled to
prevent economic damage from occurring? - Answer-
Economic threshhold
Number of pests, costs of various treatments, expected
yield, and expected grain value are all factors to
determine.... - Answer-Economic Injury level
, 4|Page
What should be done if scouting detects an important
pest, but its numbers do not reach the economic
threshold? - Answer-Do not treat, but scout again later.
They are metallic looking green beetles that are 3/8 to 1/2
and inch long with coppery wing covers. - Answer-
Japanese beetle adults.
What kind of damage do Japanese beetle adults cause? -
Answer-feed on the silks
1/4 inch beetle, black triangle on neck just below the
head? - Answer-adult bean leaf beetle.
When bean leaf beetles feed on cotyledons and first true
leaves what is the amount of beetles per foot of row that is
the economic threshold? - Answer-16 or more
When bean leaf beetles eat holes in leaves during the
vegetative growth stage what is the percent defoliation
that is the economic threshold? - Answer-30-40%
