Exam (elaborations)
2017 Agronomy Test (1)
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2017 Agronomy Test (1)
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You are spraying your customer's lot in town with an insecticide to control aphids.The lot is 10,890 square feet. The insecticide you are using states a maximum of 18
oz. per acre. If you use the maximum rate of application, how many ounces of the
insecticide could you use?
a. 18
b. 4.5
c. 9
d. 12 - CORRECT ANSWER-b. 4.5
Which of the following have chewing mouth parts?
a. earwigs
b. adult moths
c. leafhoppers
d. aphids - CORRECT ANSWER-a. earwigs
An adjuvant is:
a. a type of disinfectant for pruners
b. in the pyrethroid chemical class
c. a spreader sticker or other application enhancer
d. a type of biological control for certain weeds - CORRECT ANSWER-c. a spreader
sticker or other application enhancer
Which of the following pesticides can be absorbed by the plant and translocated
within the plant?
a. contact
b. systemic
c. adsorptive
d. volatile - CORRECT ANSWER-b. systemic
Knowledge of the stages in a pest life cycle, insect or disease, is important because:
a. not all stages cause damage or warrant control
b. stages vary in their susceptibility to control strategies
c. not all stages look alike
d. all the above - CORRECT ANSWER-d. all of the above
Keeping crops or desired plants vigorous, healthy, and competitive with weeds is an
example of a _____________ type of weed control.
a. mechanical
, b. chemical
c. biological
d. cultural - CORRECT ANSWER-d. cultural
Established perennial weeds are more difficult to control than annual weeds
because:
a. perennial weeds start growth earlier in the spring than annual weeds
b. perennial weeds are not sensitive to most herbicides
c. perennial weeds are much bigger than annual weeds
d. perennial weeds have stored energy reserves that can support plants when
stressed - CORRECT ANSWER-d. perennial weeds have stored energy reserves
that can support plants when stressed
Which of the following soil types would contain a type of expansive clay that is
cracked part of the year?
a. vertisols
b. histosols
c. inceptisols
d. peptosols - CORRECT ANSWER-a. vertisols
Mycotoxins are poisonous chemical compounds sometimes found in grain samples.
They are produced by:
a. bacteria
b. viruses
c. nematodes
d. fungi - CORRECT ANSWER-d. fungi
In wheat, Feekes' developmental stage 10, or in the "Boot" refers to the stage when
the:
a. head is about to appear
b. seedling emerges
c. head of wheat is ripe
d. second node appears on the stem - CORRECT ANSWER-a. head is about to
appear
Safflower and sunflower are in the:
a. cucurbit family
b. composite family
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