9/22/25, 8:23 AM Illinois Field Crop Applicators Test EXAM Questions and Answers (Verified Answers) (Latest Update 2025) UPDATE!! Flashcards | …
Illinois Field Crop Applicators Test EXAM
Questions and Answers (Verified Answers) (Latest
Update 2025) UPDATE!!
Save
Terms in this set (102)
various, economical, An integrated pest management program is based
environmentally sound, upon what factors?
socially acceptable
What is the number of pests that should be controlled
Economic threshhold
to prevent economic damage from occurring?
Number of pests, costs of various treatments,
Economic Injury level expected yield, and expected grain value are all
factors to determine....
What should be done if scouting detects an important
Do not treat, but scout
pest, but its numbers do not reach the economic
again later.
threshold?
random When scouting, where in the field should you sample?
Cultural, Mechanical, What are the 4 types of control measures used in an
Biological, Chemical IPM?
At what stage in the life-cycle of a Corn rootworm
Larvae does it prune and tunnel through the roots causing
stalk lodging?
At what life-cycle stage does a corn rootworm cause
Adult
ear damage by feeding on the silks?
https://quizlet.com/1080310823/illinois-field-crop-applicators-test-exam-questions-and-answers-verified-answers-latest-update-2025-update-flash-cards/ 1/11
, 9/22/25, 8:23 AM Illinois Field Crop Applicators Test EXAM Questions and Answers (Verified Answers) (Latest Update 2025) UPDATE!! Flashcards | …
When silks are green, 5 or What are the economic thresholds when scouting for
more beetles per plant if corn rootworm beetles in corn?
silks are clipped within 1/2
inch of the ear tip.
From late July to late What are the economic thresholds when scouting for
august at least 5 beetles corn rootworm beetles in soy?
per unbaited pherocon
AM trap in soybeans or
.75 beetles per plant in
non-rotated corn.
feed on the leaves and What damage does a black cutworm larvae do to
older larvae cause leaf corn seedlings?
cutting leading to
reduced stands.
Crop debris, winter annaul What are 3 factors that have the most potential to
weeds, late planted lead to black cutworm damage?
rescue treatments when What is the recommended method for managing
nessisary black cutworms in IL?
What type of larvae causes whorl damage in 1st
European corn borer generation, stalk tunneling damage in the 2nd
generation with possible ear tunneling and stalk rot?
Damages corn by coating the tassels and silks with
Leaf Aphid
honeydew which reduces pollination.
What insects have white, C-shaped, and about 1 inch
Japanese beetle grubs
long larvea which can be differentiated by their raster
and other white grubs.
patterns?
They chew on the roots and root hairs of seedlings
resulting in irregular emergence, reduced stands, and
Japanese beetle grubs
stunted or wilted plants. Injured plants may turn
purple because they cannot take up phosphorus.
They are metallic looking green beetles that are 3/8
Japanese beetle adults.
to 1/2 and inch long with coppery wing covers.
https://quizlet.com/1080310823/illinois-field-crop-applicators-test-exam-questions-and-answers-verified-answers-latest-update-2025-update-flash-cards/ 2/11
Illinois Field Crop Applicators Test EXAM
Questions and Answers (Verified Answers) (Latest
Update 2025) UPDATE!!
Save
Terms in this set (102)
various, economical, An integrated pest management program is based
environmentally sound, upon what factors?
socially acceptable
What is the number of pests that should be controlled
Economic threshhold
to prevent economic damage from occurring?
Number of pests, costs of various treatments,
Economic Injury level expected yield, and expected grain value are all
factors to determine....
What should be done if scouting detects an important
Do not treat, but scout
pest, but its numbers do not reach the economic
again later.
threshold?
random When scouting, where in the field should you sample?
Cultural, Mechanical, What are the 4 types of control measures used in an
Biological, Chemical IPM?
At what stage in the life-cycle of a Corn rootworm
Larvae does it prune and tunnel through the roots causing
stalk lodging?
At what life-cycle stage does a corn rootworm cause
Adult
ear damage by feeding on the silks?
https://quizlet.com/1080310823/illinois-field-crop-applicators-test-exam-questions-and-answers-verified-answers-latest-update-2025-update-flash-cards/ 1/11
, 9/22/25, 8:23 AM Illinois Field Crop Applicators Test EXAM Questions and Answers (Verified Answers) (Latest Update 2025) UPDATE!! Flashcards | …
When silks are green, 5 or What are the economic thresholds when scouting for
more beetles per plant if corn rootworm beetles in corn?
silks are clipped within 1/2
inch of the ear tip.
From late July to late What are the economic thresholds when scouting for
august at least 5 beetles corn rootworm beetles in soy?
per unbaited pherocon
AM trap in soybeans or
.75 beetles per plant in
non-rotated corn.
feed on the leaves and What damage does a black cutworm larvae do to
older larvae cause leaf corn seedlings?
cutting leading to
reduced stands.
Crop debris, winter annaul What are 3 factors that have the most potential to
weeds, late planted lead to black cutworm damage?
rescue treatments when What is the recommended method for managing
nessisary black cutworms in IL?
What type of larvae causes whorl damage in 1st
European corn borer generation, stalk tunneling damage in the 2nd
generation with possible ear tunneling and stalk rot?
Damages corn by coating the tassels and silks with
Leaf Aphid
honeydew which reduces pollination.
What insects have white, C-shaped, and about 1 inch
Japanese beetle grubs
long larvea which can be differentiated by their raster
and other white grubs.
patterns?
They chew on the roots and root hairs of seedlings
resulting in irregular emergence, reduced stands, and
Japanese beetle grubs
stunted or wilted plants. Injured plants may turn
purple because they cannot take up phosphorus.
They are metallic looking green beetles that are 3/8
Japanese beetle adults.
to 1/2 and inch long with coppery wing covers.
https://quizlet.com/1080310823/illinois-field-crop-applicators-test-exam-questions-and-answers-verified-answers-latest-update-2025-update-flash-cards/ 2/11
