Multiple
Choice
Identify the letter of the choice that best completes the statement or answers the
question.
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| 1. | Which of the following plants
are native to North America? a. | wheat, oat, and
soybean | b. | corn, pumpkin, and sunflower | c. | both wheat, oat, and soybean and corn, pumpkin, and
sunflower | d. | none of these are correct | | |
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| 2. | The US government describes an
invasive plant species as ........... a. | any non-native plant
species | b. | any non-cultivated non-native plant species | c. | any non-native plant species that causes economic or environmental
harm | d. | any plant species that causes economic or environmental
harm | | |
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| 3. | Fertilizers are sold in many
different formulations, most often expressed as ratios. A fertilizer designated
“triple-thirteen” refers to a fertilizer containing a. | 13% N, 13% P, and 13% K | b. | 13% N, 13% P O , 13 % K
O | c. | 13% N, P and K, 13% micro-nutrients and 13%
lime | d. | 130 lbs N per ton, 130 lbs P O , and 130 lbs K O per
ton | | |
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| 4. | Failure of seed to germinate
after planting can be caused by many factors. Which of the following reasons is NOT a cause
for this failure? a. | non-viable seed | c. | dry seedbed | b. | unfavorable soil temperature | d. | soil crusted at
surface | | | | |
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| 5. | Geotropism is caused by plant
hormones that cause a plant to a. | lean toward a light
source | b. | have downward growth of roots | c. | have upward growth of stems | d. | both have downward growth of roots and
have upward growth of stems | | |
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| 6. | Weeds are always undesirable in
a forage crop because they a. | Usually reduce forage quality of the
crop | b. | Take moisture and nutrients from the forage
plants | c. | Are often unpalatable to livestock | d. | All of these are correct | | |
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| 7. | You are purchasing hay and have
a choice between two lots of alfalfa hay that are equivalent in quality and both are selling for $150
per ton. There is only one difference, lot A is 10% moisture and lot B is 15% moisture. What is the
actual price per ton of dry matter for each lot of hay? Round to the nearest
dollar. a. | A= $167 and B= $176 | c. | A= $135 and B=
$128 | b. | A= $140 and B= $135 | d. | There is no
difference | | | | |
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| 8. | You have been called to a corn
producer to assess potential grain yield loss from hail damage. Plants are at the four-leaf stage and
have an average leaf defoliation of 25%. The anticipated yield loss will be? a. | none | c. | about 25% | b. | less than
10% | d. | the producer should replant | | | | |
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| 9. | In small grain production (
rice, wheat, rye, barley, or oats ), jointing refers to which of the following? a. | tiller production ( Feekes stage 3 ) | b. | the grain is in the boot ( Feekes stage 10) | c. | the first node is visible ( Feekes stage 6) | d. | the flag leaf has emerged ( Feekes stage 9 ) | | |
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| 10. | Which of the following crops is
a dicot? a. | corn | b. | rice | c. | orchardgrass | d. | flax | | | | | | | | |
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| 11. | Which of the following soils
would hold the most water? a. | sand | b. | loam | c. | sandy loam | d. | silty clay | | | | | | | | |
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| 12. | Which of the following
nutrients becomes more available as the pH increase becomes more alkaline? a. | manganese | b. | iron | c. | copper | d. | calcium | | | | | | | | |
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| 13. | You have a rice field that
measures 1350 ft. x 1452 ft. Your soil test recommends that you apply 125 pounds of nitrogen per acre
to this field. How much urea (46-0-0) do you need to apply to this field to meet the
recommendation? a. | 6.11 tons | b. | 2.8 tons | c. | 1 ton | d. | 271.7 pounds | | | | | | | | |
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| 14. | The velvetleaf and grasses in
your field are turning white. Which of the following herbicide types most likely was
applied? a. | amino acid inhibitor | c. | cell membrane
disrupter | b. | pigment inhibitor | d. | photosynthesis
inhibitor | | | | |
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| 15. | Which of the following is a
secondary nutrient? a. | nitrogen | b. | calcium | c. | boron | d. | iron | | | | | | | | |
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| 16. | Your corn crop is showing an
average of two collars per plant. What is your crop’s growth stage?
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| 17. | Which of the following tillage
systems and residues would provide the most water infiltration 1 hour after a rain? a. | plowed, disked, cultivated with bare surface | b. | no-tillage, 80% residue cover | c. | no-tillage, bare surface | d. | no-tillage, 40% residue
cover | | |
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| 18. | The nozzles on your spray boom
are 20 inches apart. You are applying 20 gallons of spray per acre at 3 MPH. What is your nozzle
output? a. | 0.20 gallons per minute | c. | 0.45 gallons per
minute | b. | 0.10 gallons per minute | d. | 1 gallon per
minute | | | | |
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| 19. | What is
ammonification? a. | the conversion of an element from the inorganic to the organic
form | b. | the biochemical oxidation of ammonium to
nitrate | c. | the biochemical process whereby ammoniacal is released from nitrogen
containing organic compounds | d. | the biochemical reduction of nitrate to
gaseous nitrogen | | |
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| 20. | The “critical
value” for plant nutrition is a. | the nutrient concentration in the plant
below which a yield response to added nitrogen occurs | b. | the nutrient concentration range in which added nutrients will not increase
yield | c. | the nutrient absorption by the plant that does not influence
yield | d. | when the concentration of elements is high enough to reduce
yield | | |
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| 21. | What role does nitrogen play in
a plant? a. | It is a primary component of cellulose | c. | It is part of the lignin in a
plant | b. | It is used for synthesis of proteins | d. | None of these are
correct | | | | |
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| 22. | A soil classified as
“acidic” if it has a pH a. | below 6.5 | c. | that is neutral | b. | higher than 7.5 | d. | has no pH | | | | |
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| 23. | Rill erosion is defined
as a. | flowing surface water transports uniform layers of soil | b. | the small channels of fast flowing surface water join to form deep and wide
channels | c. | intermediate sized particles that move in leaps with the
wind | d. | fast flowing surface water cuts small channels or streamlets into the
soil | | |
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| 24. | You are planting pinto beans.
You want to plant 60 pounds of viable seed per acre. The seed you purchase is 95% pure with a
germination of 93%. How many actual pounds must you plant? a. | 68 pounds | b. | 60 pounds | c. | 56 pounds | d. | 57 pounds | | | | | | | | |
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| 25. | Which of the following factors
affect spray drift. a. | nozzle size, evaporation rate, boom
width | b. | spray pressure, nozzle size, soil texture | c. | boom height, evaporation rate, spray pressure | d. | spray viscosity, nozzle material, residue | | |
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| 26. | Farmer Beach plants corn at
32,000 plants per acre. The seed has a 92% germination. What is the expected stand? a. | 32,000 plants per acre | c. | 29,440 plants per acre | b. | 27,968 plants per acre | d. | 34,782 plants per acre | | | | |
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| 27. | Which of the following is
NOT a benefit of liming acid soils? a. | increased supply of calcium and
magnesium | b. | increased soil pH and availability of aluminum, manganese and
iron | c. | increased favorable microbial activity | d. | improved soil structure and tilth | | |
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| 28. | Plant analysis a. | is a very good substitute for a soil test | b. | provides a tool to develop more efficient and economical fertilizer
usage | c. | should be correlated with soil sampling and field problems or
situations | d. | both provides a tool to develop more efficient and economical
fertilizer usage and should be correlated with soil sampling and field problems or
situations | | |
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| 29. | The leaf blade of a grass plant
is attached to a leaf sheath which in turn attaches to the stem of the plant at the a. | auricles | c. | node | b. | ligules | d. | None of these are
correct | | | | |
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| 30. | If a soil test indicates that
your field is low in phosphorus and potassium, the fertilizer recommendation might suggest that
you a. | use more fertilizer than crop removal to build the soil test in the low test
areas | b. | fallow the field for a year to allow more nutrients to
mineralize | c. | apply sufficient N, P, and K to meet the crop removal needs of the
field only | d. | apply only liquid fertilizers that might have higher
availability | | |
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| 31. | The fertilizer recommendations
that a farmer receives with the soil test results typically vary the most with a. | crop and yield goal | b. | time of year | c. | method of application | d. | the level of conservation tillage the
farmer uses | | |
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| 32. | In some cases, one can estimate
the amount of organic matter found in the soil until is becomes totally black. Soil is black when the
organic matter content is equal to or greater than
percent. a. | 2 | c. | 5 | b. | 4 | d. | None of these are
correct | | | | |
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| 33. | In order for crop residue to
decay, microbes must be present a. | in addition to temperatures between 52-86
F and adequate moisture without the presence of air (oxygen) | b. | in addition to temperatures between 52-86 F, adequate moisture and good soil
aeration | c. | and the residue must be buried in the soil | d. | and fertilizer must be added to the crop field | | |
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| 34. | Tomato spotted with virus
(TSWV) affects which of the following crops? a. | tomatoes | c. | peanuts | b. | peppers | d. | All of these are correct | | | | |
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| 35. | Powdery mildew can be
controlled by using which of the following type of crop protection product(s)? a. | nematicide | c. | fungicide | b. | miticide | d. | All of these are
correct | | | | |
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| 36. | If you wanted to make a banded
herbicide application that would apply an equal amount of herbicide over the banded area, you would
use which type of nozzle? a. | hollow
cone | c. | flat-fan EVS | b. | flood jet | d. | flat-fan | | | | |
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| 37. | Soybean rust has been
identified in the United States soybean crop?
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| 38. | TDN is an abbreviation used for
what common term? a. | Triclopyralid, Di-Syston, Nitrogen Premix | b. | Total Digestible Nutrients | c. | Totally Decomposed
Nitrogen | d. | Tri-Di-chloro Nicosulfuron | | |
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| 39. | Which of the following is a
common class of herbicides that are used at very low rates (less than 1 oz/acre) in cereal
crops? a. | Sufonylurea (SU) “amino acid
inhibitor” | b. | Triazines
“photosynthetic” | c. | Growth
Regulations | d. | None of these are correct | | |
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| 40. | Which of the following type(s)
of transgenic soybeans have been approved for planting in the United States? a. | Liberty Link | b. | Both Liberty Link and Roundup
Ready | c. | Roundup Ready | d. | None of these are correct | | |
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| 41. | Generally, which of the
following nutrients is most mobile in soil solution? a. | phosphorus | b. | iron | c. | potassium | d. | sulfur | | | | | | | | |
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| 42. | “The Law of the
Minimum” states that a. | the least available nutrient will limit
yield | b. | the most available nutrient will limit yield | c. | yield is not limited by fertility | d. | the highest yields are achieved by low soil fertility | | |
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| 43. | Which of the following soil
types would require the greatest amount of lime to bring up a low pH
condition? a. | sand | c. | silt loam | b. | sandy clay
loam | d. | clay loam | | | | |
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| 44. | Foliar applied herbicides that
exhibit differential selectivity are generally based upon what? a. | differential placement | b. | differential
metabolism | c. | physiological morphogensis | d. | both differential placement and physiological morphogensis | | |
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| 45. | Why would you add a surfactant
to a pesticide for application? a. | to enhance absorption of the pesticide to
the plant | b. | to change the molecular structure of the
herbicide | c. | to protect the crop from herbicide damage | d. | None of these are correct | | |
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| 46. | Which of the following crops
uses the most nitrogen? a. | corn | b. | potatoes | c. | soybeans | d. | cotton | | | | | | | | |
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| 47. | Pesticide labels contain a lot
of very useful information. Which of the following information IS NOT included in a
label. a. | applicator safety precautions | c. | cost of the
product | b. | environmental hazards | d. | application
rates | | | | |
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| 48. | The smallest particle in soil
is a. | sand | c. | clay | b. | silt | d. | All of these are
correct | | | | |
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| 49. | Which of the following must be
applied, if deficient, for all grass crops? a. | zinc | c. | boron | b. | manganese | d. | All of these are correct | | | | |
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