nitrification
Definition
Oxidation of ammonium (NH4+) ions into nitrite (NO2-) ion and then nitrate (NO3-) ions by microorganisms in soil and water. Nitrate ions are absorbed by the plants as essential nutrients and, with the help of oxygen, converted (synthesized) into plant protein (amino acids). See also nitration.
nitrification is in the Environment & Pollution Control subject.
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