Illinois Field Crops Applicator Exam [2025-2026]
Review QUESTIONS AND ALL CORRECT ANSWERS
100% SOLVED AND GUARANTEED SUCCESS!!
An Integrated Pest Management program is based upon 1.Scouting
for pests-understanding pest biology 2.Environmental information-
growth stages of field crops
3.technology to prevent unacceptable thresholds of pest damage by
most econmomical means-economic threshold of insects, diseases or
weeds
4. Lowest possible risk to people , property, resources and environment-
socially acceptable control measures
When scouting, where in the field should one sample? 1.randomly-
avoid borders rows or field edges
2.regularly scout at least 1x per week
what should be done if scouting detects an important pest but its
numbers do not reach the economic threshold? Do not treat, but
scout again after an appropriate time period
What is the number of pests that should be controlled to prevent
economic damage from occurring? economic threshold
injury = control
List factors that are considered in determining an economic injury level,
the number of pest where the value of crop loss from these pests
, equals the cost of controlling them 1. number of pests or estimate
of the amount of damage
2. cost of various treatment options
3.expected yield
4.expected grain value
List 3 examples of economic thresholds for some insect pests 1. black
cutworms-3% or more of plants are cut
2. bean leaf beetle-defoliation reaches 30% before bloom
3. Potato leaf hopper-certain number are collected per sweep at a given
plant height
what types of control measures can be used in an ipm program 1.
mechanical
2. physical
3. biological
4. chemical
what kind of damage is caused by corn rootworms, the most important
economic insect pest of corn in illinois? 1. Larvae-chew on and
tunnel in roots
2. adults-feed on and cut silks at ear tip
-reduce kernal pollination
What are the economic thresholds when scouting for corn rootworm
beetles? 1. when the silks are green, if silks are clipped within 1/2
inch of the tip of the ear.
Review QUESTIONS AND ALL CORRECT ANSWERS
100% SOLVED AND GUARANTEED SUCCESS!!
An Integrated Pest Management program is based upon 1.Scouting
for pests-understanding pest biology 2.Environmental information-
growth stages of field crops
3.technology to prevent unacceptable thresholds of pest damage by
most econmomical means-economic threshold of insects, diseases or
weeds
4. Lowest possible risk to people , property, resources and environment-
socially acceptable control measures
When scouting, where in the field should one sample? 1.randomly-
avoid borders rows or field edges
2.regularly scout at least 1x per week
what should be done if scouting detects an important pest but its
numbers do not reach the economic threshold? Do not treat, but
scout again after an appropriate time period
What is the number of pests that should be controlled to prevent
economic damage from occurring? economic threshold
injury = control
List factors that are considered in determining an economic injury level,
the number of pest where the value of crop loss from these pests
, equals the cost of controlling them 1. number of pests or estimate
of the amount of damage
2. cost of various treatment options
3.expected yield
4.expected grain value
List 3 examples of economic thresholds for some insect pests 1. black
cutworms-3% or more of plants are cut
2. bean leaf beetle-defoliation reaches 30% before bloom
3. Potato leaf hopper-certain number are collected per sweep at a given
plant height
what types of control measures can be used in an ipm program 1.
mechanical
2. physical
3. biological
4. chemical
what kind of damage is caused by corn rootworms, the most important
economic insect pest of corn in illinois? 1. Larvae-chew on and
tunnel in roots
2. adults-feed on and cut silks at ear tip
-reduce kernal pollination
What are the economic thresholds when scouting for corn rootworm
beetles? 1. when the silks are green, if silks are clipped within 1/2
inch of the tip of the ear.
