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Agricultural Science WAEC Past Questions

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446
Which of the following types of fertilizer is recommended for use in high quantities for groundnut production?
  • A. nitrogen fertilizer
  • B. phosphorus fertilizer
  • C. potassium fertilizer
  • D. compost
  • E. potassium and calcium fertilizer
View Answer & Discuss WAEC 1996
447
Lodging in crops is caused by excess supply of
  • A. potassium
  • B. sulphur
  • C. iron
  • D. nitrogen
  • E. sodium
View Answer & Discuss (1) WAEC 1996
448
Adoption of clean clearing of land in the tropical rain forest is not advisable because it
  • A. encourages erosion arid leaching
  • B. is very expensive
  • C. is very difficult to practise
  • D. eprives the farmer of continous use of wood
  • E. encourages compaction of soil
View Answer & Discuss (2) WAEC 1996
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449
Which of the following is not an effect of bush burning on the soil?
  • A. sterilizing soil against some harmful soil micro-organisms
  • B. destroying the structure of soil
  • C. increasing rate of nitrogen mineralization
  • D. predisposing soil erosion
  • E. maintaining high levels of soil nutrients reserves
View Answer & Discuss WAEC 1996
450
Irrigation can be defined as
  • A. high water table for plants
  • B. a system of farming in whivh crops are provided with water artificially
  • C. a type of farming where crops depend mostly on rainfall
  • D. a type of farming practised in the fprest zones
  • E. the storage of water for future farm operation
View Answer & Discuss WAEC 1996
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