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WAEC Agricultural Science 2019 Question 18

Question 18

Farming Systems

In a crop rotation system it is usually preferred that cassava comes last in the rotation because it

  1. A.adds nitrogen to the soil.
  2. B.is a shallow feeder.
  3. C.is a deep rooted crop.
  4. D.is a perennial crop.
Show the answer and explanation

Answer: C (is a deep rooted crop.)

Explanation

Cassava's deep roots reach nutrients left deep in the soil after other crops.