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WAEC Agricultural Science 2008 Question 17

Question 17

Irrigation and Drainage

Excessive drainage of soil water can be checked by the addition of adequate quantities of

  1. A.N.P.K. 15 – 15 – 15
  2. B.sulphate of ammonia
  3. C.single superphosphate
  4. D.compost manure
Show the answer and explanation

Answer: D (compost manure)

Explanation

Organic matter holds water in the soil.