title: Nitrification reactions in a column of soil with a flowing nutrient solution.
mesh_terms: D046508:Culture Techniques; D009573:Nitrites / Q000378:metabolism; D009576:Nitrobacter / Q000254:growth & development* / Q000378:metabolism; D000644:Quaternary Ammonium Compounds / Q000378:metabolism; D012988:Soil Microbiology; D012996:Solutions
chemical_list: D009573:Nitrites; D000644:Quaternary Ammonium Compounds; D012996:Solutions