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JAMB Biology 2012 Question 36

Question 36

Soil

An indigenous method of renewing and maintaining soil fertility is by

  1. A.clearing farms by burning
  2. B.planting one crop type
  3. C.adding inorganic fertilizers yearly
  4. D.crop rotation and shifting cultivation.
Show the answer and explanation

Answer: D (crop rotation and shifting cultivation.)

Explanation

Traditional farmers rotate crops and leave land to rest (shifting cultivation), which lets the soil recover its nutrients naturally.