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Illinois Field Crop Applicators questions with verified solutions .
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Illinois Field Crop Applicators questions with verified solutions .
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Illinois Field Crop Applicatorsquestions with verified solutions
2024-2025
various, economical, environmentally sound, socially acceptable -
answer An integrated pest management program is based upon
what factors?
Economic threshhold - answer What is the number of pests that
should be controlled to prevent economic damage from occurring?
Economic Injury level - answer Number of pests, costs of various
treatments, expected yield, and expected grain value are all factors
to determine....
Do not treat, but scout again later. - answer What should be done if
scouting detects an important pest, but its numbers do not reach
the economic threshold?
random - answer When scouting, where in the field should you
sample?
Cultural, Mechanical, Biological, Chemical - answer What are the 4
types of control measures used in an IPM?
Larvae - answer At what stage in the life-cycle of a Corn rootworm
does it prune and tunnel through the roots causing stalk lodging?
Adult - answer At what life-cycle stage does a corn rootworm cause
ear damage by feeding on the silks?
, When silks are green, 5 or more beetles per plant if silks are clipped
within 1/2 inch of the ear tip. - answer What are the economic
thresholds when scouting for corn rootworm beetles in corn?
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. - answer What are the economic thresholds when
scouting for corn rootworm beetles in soy?
feed on the leaves and older larvae cause leaf cutting leading to
reduced stands. - answer What damage does a black cutworm larvae
do to corn seedlings?
Crop debris, winter annaul weeds, late planted - answer What are 3
factors that have the most potential to lead to black cutworm
damage?
rescue treatments when nessisary - answer What is the
recommended method for managing black cutworms in IL?
European corn borer - answer What type of larvae causes whorl
damage in 1st generation, stalk tunneling damage in the 2nd
generation with possible ear tunneling and stalk rot?
Leaf Aphid - answer Damages corn by coating the tassels and silks
with honeydew which reduces pollination.
Japanese beetle grubs and other white grubs. - answer What insects
have white, C-shaped, and about 1 inch long larvea which can be
differentiated by their raster patterns?
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