Effect of starch and inorganic nitrogen on microbial transformations of organic compounds in soil
Language English Country United States Media print
Document type Comparative Study, Journal Article
PubMed
6247256
DOI
10.1007/bf02933013
Knihovny.cz E-resources
- MeSH
- Biotransformation MeSH
- Depression, Chemical MeSH
- Stimulation, Chemical MeSH
- Nitrogen metabolism pharmacology MeSH
- Fertilizers MeSH
- Soil Microbiology * MeSH
- Starch pharmacology MeSH
- Carbon metabolism MeSH
- Publication type
- Journal Article MeSH
- Comparative Study MeSH
- Names of Substances
- Nitrogen MeSH
- Fertilizers MeSH
- Starch MeSH
- Carbon MeSH
It was found in long-term incubation experiments (100 weeks) that in soil non amended with organic compounds, mineralization proceeded in a steady state after an initial reactive respiration and corresponded approximately to the rate of mineralization of soil organic matter under natural conditions. The addition of nitrogen influenced this mineralization process only very slightly. The addition of starch decreased the stability of organic compounds in the soil at first but the newly formed organic substances were gradually stabilized again. The addition of nitrogen to starch increased the extent and the rate of these alterations. The overall extent of mineralization of the substrate after the addition of starch alone exceeds the amount of the added substrate; a small accumulation of the substrate could be observed after the addition of starch together with nitrogen.
