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WAEC Agricultural Science 1992 Question 12

Question 12

Soil Fertility and Plant Nutrition

Chlorosis observed along the veins of leaves is a characteristic symptom for the deficiency of

  1. A.nitrogen
  2. B.magnesium
  3. C.potassium
  4. D.phosphorus
  5. E.sulphur.
Show the answer and explanation

Answer: B (magnesium)

Explanation

Magnesium shortage causes yellowing of the leaf tissue between and along the veins, starting on older leaves.