Acetylene reduction (dinitrogen fixation) and nitrification in soil as affected by the structural aggregate size
Language English Country United States Media print
Document type Journal Article
PubMed
294405
DOI
10.1007/bf02927123
Knihovny.cz E-resources
- MeSH
- Acetylene metabolism MeSH
- Bacteria metabolism MeSH
- Nitrates metabolism MeSH
- Nitrogen Fixation MeSH
- Nitrogenase metabolism MeSH
- Oxidation-Reduction MeSH
- Soil MeSH
- Soil Microbiology * MeSH
- Particle Size MeSH
- Publication type
- Journal Article MeSH
- Names of Substances
- Acetylene MeSH
- Nitrates MeSH
- Nitrogenase MeSH
- Soil MeSH
The effect of size of structural aggregates on the intensity of nitrification and nitrogenase (nitrogen: acetylene oxidoreductase) activity was investigated in three soils. In two of them the nitrogenase activity was limited by addition of glucose. Aggregates of a larger diameter (2-4 mm) exhibited a considerably higher nitrogenase activity than those with a diameter smaller than 2 mm. This effect was even more pronounced when the soil samples were repeatedly intensively aerated. On the contrary, smaller aggregates (0.5-2 mm) exhibited more intensive nitrification.
