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WAEC Agricultural Science 2000 Question 16

Question 16

Soil Fertility and Plant Nutrition

A farmer who applies gypsum on his farmland intends to

  1. A.decrease soil acidity
  2. B.increase soil acidity
  3. C.decrease soil alkalinity
  4. D.increase soil alkalinity.
Show the answer and explanation

Answer: C (decrease soil alkalinity)

Explanation

Gypsum's calcium replaces sodium in alkaline soils, which is then washed out.