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WAEC Agricultural Science 2013 Question 17

Question 17

Soil Fertility and Plant Nutrition

A 100kg NPK 15 : 15 : 15 compound fertilizer has a filler make-up weight of

  1. A.30kg.
  2. B.40kg.
  3. C.45kg.
  4. D.55kg.
Show the answer and explanation

Answer: D (55kg.)

Explanation

Nutrients = 15 + 15 + 15 = 45 kg, so filler = 100 − 45 = 55 kg.