Nitrogen cycle
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- Denitrification "Denitrification is a microbially facilitated process of nitrate reduction that may ultimately produce molecular nitrogen (N2) through a series of intermediate gaseous nitrogen oxide products." - Wikipedia
- Nitrification "Nitrification is the biological oxidation of ammonia with oxygen into nitrite followed by the oxidation of these nitrites into nitrates. Degradation of ammonia to nitrite is usually the rate limiting step of nitrification. Nitrification is an important step in the nitrogen cycle in soil." - Wikipedia
- Nitrogen cycle "The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms. This transformation can be carried out via both biological and non-biological processes. Important processes in the nitrogen cycle include fixation, mineralization, nitrification, and denitrification." - Wikipedia
- Nitrogen cycle Research Topics
- Nitrogen fixation "Nitrogen fixation is the natural process, either biological or abiotic, by which nitrogen (N2) in the atmosphere is converted into ammonia (NH3)." - Wikipedia
- Organic Materials as Nitrogen Fertilizers "Organic materials usually are added to soils to provide such plant nutrients as nitrogen and to improve the physical nature of the soil." - Colorado State University
