WAEC Agricultural Science 2004 Question 16

Question 16

Irrigation and Drainage

Farm drainage does not lead to

  1. A.improvement in soil structure
  2. B.improvement of soil temperature
  3. C.increased soil aeration
  4. D.reduction of soil alkalinity
Show the answer and explanation

Answer: D (reduction of soil alkalinity)

Explanation

Drainage improves air, warmth and structure; it does not directly change alkalinity.