Illinois Field Crop Applicators Test Latest Update 2025-2026 Actual Exam 150 Questions with 100% Verified Correct Answers Guaranteed A+ Verified by Professor
100 - CORRECT ANSWER: Droplets below ____ microns in size are at risk of drift.
16 or more - CORRECT ANSWER: 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?
2 inches - CORRECT ANSWER: Most weed seeds germinate in the top how many
inches of the top soil?
20% defoliation or 5-10% injured pods - CORRECT ANSWER: when bean leaf beetles
feed during pod fill what is the percentage of defoliation or damaged pods that is the economic threshold?
30-40% - CORRECT ANSWER: When bean leaf beetles eat holes in leaves during the
vegetative growth stage what is the percent defoliation that is the economic threshold?
8.34 - CORRECT ANSWER: how much does a gallon of water weigh in pounds?
adjuvants - CORRECT ANSWER: What is added to a postemergence herbicide to
increase the following factors?-spray coverage -herbicide effectiveness -spray potential -droplet size which decreases drift 1 / 3
Adult - CORRECT ANSWER: At what life-cycle stage does a corn rootworm cause ear
damage by feeding on the silks?
adult - CORRECT ANSWER: What alfalfa weevil lifecycle stage is described here: 1/2 inch long beetle that is meduim brown w/ dark brown stripe. hard shell.
adult bean leaf beetle. - CORRECT ANSWER: 1/4 inch beetle, black triangle on neck just below the head?
after the first crop - CORRECT ANSWER: when is alfalfa most susceptible to potato leafhopper damage and as a consequence when is the most critical time to scout for this pest?
alfalfa weevil - CORRECT ANSWER: What pest causes this damage: larvae skeltonize leaves, causes fields to appear frosted, adults feather the leaves and chew stems
alfalfa weevil - CORRECT ANSWER: What pest has this economic threshold? first crop-
- or more larvae per stem and 20% of the tips skeletonized.
later cuttings- feeding on 50% of crowns and no regrowth for 3-6 days.
armyworm larvae - CORRECT ANSWER: name the pest- Appearance is grean brown
w/ orange stripes up to 1.5 inches long. Damage they cause is feed at night and on cloudy days chewing through wheat stems causing heads to fall off.
biological - CORRECT ANSWER: The following methods of controlling insect pests are examples of what type of method?-tachinid flies parasitizing army worms -genetically modified corn containing Bt
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broadleaf - CORRECT ANSWER: these are 4 main characteristics used to identify what type of weed seedlings?
- cotyledons
- true leaves
- arrangement of true leaves
- leaf petioles
C - CORRECT ANSWER: When a droplet spectrum category and VMD range is listed
as coarse and 350-450 microns what is the abbreviation for it?
chemical - CORRECT ANSWER: The following methods of controlling insect pests are examples of what type of method?-rescue treatment of corn for black cutworm -banding insecticide over corn row at planting time to control corn root-worm
contact - CORRECT ANSWER: _____ fungicides are fungicides that remians of the
surface of the plant
contact - CORRECT ANSWER: Foliar applied herbicides are classified as contact or translocated. Which of the 2 is described below?Symptoms are fast to develop and require maximum foliar coverage.
Corn - CORRECT ANSWER: Atrazine, princep, exceed, lumax/lexer are all herbicides prone to carryover that are used in what crop?
Crop debris, winter annaul weeds, late planted - CORRECT ANSWER: What are 3
factors that have the most potential to lead to black cutworm damage?
Cultural - CORRECT ANSWER: The following methods of controlling insect pest are
examples of what type of method?
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