Nitrogen cycle

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Nitrogen cycle by Mind Map: Nitrogen cycle

1. Ammonification

1.1. Produce ammonia

1.1.1. then ammonium ions

1.2. Urea

1.3. Proteins

1.4. nucleic acids

1.5. Vitamins

1.6. In soil

1.7. Saprobiotic bacteria

2. Nitrification

2.1. Ammonium to nitrate

2.2. Oxidation reaction

2.2.1. Require loose well drained soil

2.3. Releases energy

2.4. Nitrifying bacteria

2.5. Free living in soil

2.6. Two stage reaction

2.6.1. Oxidise ammonium to nitrite

2.6.2. Oxidise nitrite to nitrate

3. Nitrogen fixation

3.1. Atmospheric nitrogen to nitrogen compounds

3.2. Nitrogen fixing bacteria in soil

3.2.1. Produce ammonia

3.3. Nitrogen fixing bacteria in roots

3.3.1. produce amino acid

3.4. Lightning

4. Denitrification

4.1. Nitrate to nitrogen

4.2. denitrifying bacteria

4.3. Anaerobic process

4.4. in the soil