Agronomy MCQ Questions and Answers Quiz

11. European corn borers cause damage to corn by:

  1. feeding on the roots during the larval stage
  2. feeding on the roots during the adult stage
  3. feeding in the stalks during the larval stage
  4. feeding in the stalks during the adult stage

12. If a farmer in Central Kansas planted both a Maturity Group 3 and a Maturity Group 4 variety on the same date, which of the following crops did he plant, and what will be the most likely result?

  1. The crop is corn and the Group 3 variety would start flowering first
  2. The crop is soybean and the Group 3 variety would start flowering first
  3. The crop is corn and the Group 4 variety would start flowering first
  4. The crop is soybean and the Group 4 variety would start flowering first

13. Most of the stored food energy used for germination in a corn seed is located in the:

  1. endosperm
  2. cotyledon
  3. coleoptile
  4. pericarp

14. Phosphorus from fertilizer or manure is most likely to be lost from crop fields, and thus may harm the environment, by:

  1. runoff into surface water (contributing to eutrophication of lakes and streams)
  2. leaching into groundwater (contaminating wells used for drinking water)
  3. volatilization into the atmosphere as a greenhouse gas (contributing to global warming)
  4. all of the above are equally common ways phosphorus is lost from soils

15. Pigweed, velvetleaf, and giant ragweed are all problem weeds in row crops in Kansas that are classified as:

  1. perennial broadleaves
  2. winter annual grasses
  3. summer annual grasses
  4. summer annual broadleaves

16. Presence of high amounts of which of the following substances is the primary concern related to the quality of ground water used for irrigation:

  1. coli bacteria
  2. salts
  3. pesticide residues
  4. nitrates

17. Prussic acid poisoning is a potential problem for livestock grazing which of the following forage crops?

  1. alfalfa
  2. winter wheat
  3. tall fescue
  4. sorghum stalks

18. Sprinker irrigation systems have an advantage over furrow irrigation systems for all of the following except:

  1. more uniform application of water with sprinkler
  2. less energy required to pump and distribute water with sprinkler
  3. lower labor costs with sprinkler
  4. less land leveling needed with sprinkler

19. Syngenta and Monsanto both began selling all soybean seed by count in 2011, and other companies are expected to move quickly to bagging soybean seed by count. The standard seed count for these soybean seed bags is:

  1. 80000
  2. 100000
  3. 140000
  4. 160000

20. The greatest yield reduction due to drought stress in soybean varieties typically grown in Kansas= generally results when the stress occurs during the:

  1. seedling emergence stage resulting in decreased plant population
  2. early vegetative stage resulting in shorter plants with less leaves
  3. early flowering stage resulting in poor pollination of the early flowers
  4. pod development stage resulting in high pod abortion and reduced pods per plant
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