Illinois Field Crop Applicators Test Latest Update

Illinois Field Crop Applicators Test Latest Update

• 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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