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WAEC Agricultural Science 2013 Question 6

Question 6

Soil Fertility and Plant Nutrition

Which of the following cropping systems would lead to continuous sustenance of soil fertility?
I. Crop rotation.
II. Land rotation.
III. Monoculture.
IV. Monocropping.

  1. A.I and II only.
  2. B.I and III only.
  3. C.II and III only.
  4. D.I, II and III only.
Show the answer and explanation

Answer: A (I and II only.)

Explanation

Crop rotation and land rotation let the soil recover; growing one crop continuously exhausts it.