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WAEC Agricultural Science 1991 (August) Question 5

Question 5

Soil Fertility and Plant Nutrition

The nutrient content of soil may be influenced by the following except

  1. A.harrowing
  2. B.topography
  3. C.cropping
  4. D.fallowing
  5. E.grazing.
Show the answer and explanation

Answer: A (harrowing)

Explanation

Harrowing only breaks clods; cropping removes nutrients, fallowing restores them, grazing adds dung and topography affects leaching.