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WAEC Agricultural Science 2006 Question 16

Question 16

Soil Fertility and Plant Nutrition

A fertilizer bag had the following inscription 27:10:10. This means that it contained

  1. A.27kg of nitrogen, 10kg of phosphate, 10kg of potash
  2. B.27kg of phosphate 10kg of potash, 10 kg of nitrogen
  3. C.27kg of potash, 10kg of nitrogen, 10kg of phosphate
  4. D.27kg of sulphate, 10kg of potash, 10kg of phosphate
Show the answer and explanation

Answer: A (27kg of nitrogen, 10kg of phosphate, 10kg of potash)

Explanation

The grade is always N : P2O5 : K2O, per 100 kg of fertilizer.