The nitrogen cycle

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  •  Saprobiotic organisms break down urea and the compounds in faeces and dead organisms , they feed on these material and release ammonia to form ammonium ions in the soil


Nitrifying bacteria oxidises ammonium ions in to nitrate ions through two stages :

  •  oxidation of ammonium ions to nitrate ions
  • oxidation of nitrite ions to nitrate ions

Oxygen is required for this reaction to take place so farmers can…


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