WAEC Agricultural Science 1996 Question 15

Question 15

Soil Fertility and Plant Nutrition

Which of the following is not an effect of bush burning on the soil?

  1. A.Sterilizing soil against some harmful soil micro-organisms
  2. B.Destroying the structure of soil
  3. C.Increasing rate of nitrogen mineralization
  4. D.Predisposing soil to erosion
  5. E.Maintaining high levels of soil nutrient reserves.
Show the answer and explanation

Answer: E (Maintaining high levels of soil nutrient reserves.)

Explanation

Burning loses organic matter and nutrients, so it does not keep nutrient reserves high.