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WAEC Agricultural Science 2007 Question 12

Question 12

Soil Fertility and Plant Nutrition

Use the information: I Allowing land to fallow; II Applying organic fertilizer; III Practising monoculture; IV Growing legumes. Which of the following combinations will help to improve soil fertility status?

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

Answer: D (I, II and IV only.)

Explanation

Fallowing, manuring and legumes build fertility; monoculture exhausts soil.