Pesticide Applicator -
Vegetable Crops pests and
disease test questions and
answers(100% accuracy)
Mechanical control - answer Some insects overwinter in undisturbed soil
or in weed species that are killed through tillage
Microbial insecticide examples - answer BT and Spinosad
Insects controlled through tillage - answer grasshoppers, stalk borers
Economic thresholds - answer help maximize insecticidal control balanced
against economic and environmental costs
Insects that directly damage portions of the plants that are harvested.... -
answer have lower economic threshold than insects that damage other
parts
Brown marmorated stink bugs - answer exotic newly introduced -
regulatory measures under way
Impact beans, sweet corn, peppers, tomatoes
Spotted wing drosophila - answer newly introduced - regulatory measures
underway. primarily pest of berries and other fruit but also feeds on
tomatoes
,Introduced pests that are now wide spread - answer Japanese beetle
European corn borer
soybean aphid
diamondback moth
Regulatory agencies working to keep out - answer APHIS
Illinois department of ag
Aphids - answer Small soft bodied insects various colors - usually green or
red
Where do aphids develop - answer on young stems and leaf undersides
Effects of aphid sap feeding - answer feeding on young leaves and stems
causes curling and distortion
Aphid excrete - answer large amounts of honeydew
Impact of honeydew excretion by aphids - answer coats stems and leaves -
supports black sooty mold that reduces light reaching leaves
How are aphids kept in check - answer natural enemies - lady beetle,
lacewings, parasitic wasps
otherwise frequent insecticide sprays
What can aphid transmit - answer even very low numbers can transmit
viruses and other disease pathogens
makes insecticide to control disease unfeasible
CMV, WMV, ZYMV
Aphids transmit these viruses easily without virus being persistent in
aphid
Many weeds host these viruses
, How to protect crops against aphids and viruses they carry - answer Grow
virus resistant
Use row covers
Reflective mulches
growing early and staggering plantings in several areas
Control types for aphids - answer biological
cultural
Adult Asparagus Beetles - answer Adult beetles lay eggs on spears and
fronds - these eggs overwinter
1/4 inch long with red, black and white markings
Appear later in summer and feed on berries, causing little economic
damage
asparagus beetle larvae - answer Eggs hatch into brown to blackish larvae
up to 1/4 inch long
Heavy larval feeding on ferns reduces speer production following spring
Economic threshold of Asparagus beetle - answer Spears: 2 percent of
spears with eggs
Ferns post-harvest.: 10 percent defoliation or 50 percent plants infested
Bean leaf beetles overwinter as - answer Adults - fly into bean fields as
seedlings emerge in spring
Bean leaf beetle adults - answer 1/4 in long with black triangle behind
neck
Appearance varies from tan to red with or without 4 black spots and two
black stripes
Bean leaf beetle larvae feed on - answer the roots causing little damage
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