<P> Nitrification is the biological oxidation of ammonia or ammonium to nitrite followed by the oxidation of the nitrite to nitrate . The transformation of ammonia to nitrite is usually the rate limiting step of nitrification . Nitrification is an important step in the nitrogen cycle in soil . Nitrification is an aerobic process performed by small groups of autotrophic bacteria and archaea . This process was discovered by the Russian microbiologist Sergei Winogradsky . </P>
<P> Nitrification is the biological oxidation of ammonia or ammonium to nitrite followed by the oxidation of the nitrite to nitrate . The transformation of ammonia to nitrite is usually the rate limiting step of nitrification . Nitrification is an important step in the nitrogen cycle in soil . Nitrification is an aerobic process performed by small groups of autotrophic bacteria and archaea . This process was discovered by the Russian microbiologist Sergei Winogradsky . </P>
the process of nitrification is carried out by what group of organisms
the process of nitrification is carried out by what group of organisms
autotrophic bacteria archaea
autotrophic bacteria archaea