Potential Exam Questions for Crop Production III

Warning: The following questions may be poorly worded and subjective. Exam questions will be worded differently. Exams may also contain questions not listed here.

  1.  Name the 5 factors that have the most impact on the distribution of crops (where they are produced)
  2. What are the 3 components of Climate?
  3. What is meant by 'Rainfall Patterns"?
  4. Define long-day, short-day and day-neutral plants and give an example of each.
  5. List 4 important soil characteristics.
  6. Why is 'Cation Exchange Capacity' important to crops?
  7. Define 'comparative advantage'.
    1. What are the 4 factors that determine it?
  8. Why does culture affect crop distribution?

  9. What is the ave production level of corn in GA (bu/acre)?
  10. Give 3 climatic requirements for optimal corn production
  11. How does Corn cope with a light frost?
  12. Name 5 types of corn grown in the US.
    1. What is the primary characteristic of dent, sweet and pop corn?
  13. What is meant by 'Hybrid Vigor'
  14. Under optimal conditions in 36" rows, what plant population is desirable? Under average conditions?
  15. At what % moisture should corn be harvested?


  16. What is the average production of cotton in GA?
  17. Describe the 4 general climatic conditions for cotton production
  18. What type of life cycle does cotton have?
  19. Name the 3 groups of cotton grown in the US.
    1. Which type predominates in GA?
  20. Where on the cotton plant do the bolls actually form? Be Specific.
  21. What level of soil acidity can cotton grown under (the lowest pH)?
  22. Using 36" rows, what plant population is desirable?
  23. What is the usual planting date range?
  24. Indicate common operations performed before harvest.


  25. What is the ave. production level of wheat in GA (bu/acre)?
  26. Give a botanical description of wheat
  27. Name 3 wheat types and indicate where it is grown in the US.
  28. What application schedule should be followed for Nitrogen fertilizer?
  29. What causes yields to decline in Wheat if too much Nitrogen fertilizer is applied?
  30. Give the optimal planting Dates, plant population , and depth.
  31. Why can the seeding rate be reduced with little change in yield?
  32. What is the optimal moisture % for Harvest? For Storage?

  33. What is ‘Cultural Energy’?
  34. What is the difference between Direct and Indirect cultural energy. Define and give one example.
  35. What is ‘Energy Efficiency’? How is it calculated?
  36. Is the calculated Energy Efficiency Of the US higher (worse) or lower (better) than most less developed countries?
  37. Indicate 4 ways to improve overall energy efficiency
  38. Which specific input accounts for most of the indirect energy input for crop production?
  39. How can this input be reduced (a few ways)?
    1. How might N fertilizer be ‘wasted’?
  40. Fuel is a direct energy input for crop production.
    1. How can this input be reduced (a few ways)?


  41. What 2 factors determine the best stage of plant development at which to harvest a crop?
  42. At which stage does grain stop adding dry weight and nutrients?
    1. What is the ave moisture % at that stage (2 answers!)
  43. Name two general effects of harvesting before grain maturity.
  44. What unique harvest problem is encountered with some legumes and forages grains?
  45. Name 3 significant reasons for losses that might occur when combine harvesting is delayed until grain moisture is <14% ?
  46. What is the difference between straw and stover?
    1. Which is more digestible by livestock?

  47. What is the main determinant of stored grain quality?
  48. Name 2 negative effects of high moisture in stored grain.
  49. What 2 types of living organisms cause heat build-up?
  50. What causes grain to get hotter than 150o?
  51. The process which causes "souring" of grain is analogous to what other process?
  52. Name 3 ways to dry grain.
  53. How much air movement is needed to dry grain with unheated air?
  54. Under what 2 conditions should heated air be used for drying?
  55. At what temps should grain be dried if it is to be used for Seed? For Starch? For Feed?
  56. Give 2 reasons why dried grain should be aerated?