BOKU - Universität für Bodenkultur Wien - Forschungsinformationssystem
Gewählte Publikation:
Friedel, J.K., Gabel, D..
(2001):
Nitrogen pools and turnover in arable soils under organic farming for different periods of time: I: Pool sizes of total nitrogen, microbial biomass nitrogen and potenzially mineralisable nitrogen.
J. Plant Nutr. Soil Sci., 164, 415-419
- Abstract:
- Soil organic matter contents, soil microbial biomass, potentially mineralizable nitrogen (N) and soil pH values were investigated in the Ap horizons of 14 field plots at 3 sites which had been under organic farming over various periods. The objective was to test how these soil properties change with the duration of organic farming. Site effects were significant for pH values, microbial biomass C and N, and for potentially mineralizable N at 0-10 cin depth. The contents of total organic C, total soil N, and potentially mineralizable N tended to be higher in soils after 41 versus 3 years of organic farming, but the differences were not significant. Microbial biomass C and N contents were higher after 41 years than after 3 years of organic fanning at 0-10 cin depth, and the pH values were increased at 10-27 cm depth. Nine years of organic farming were insufficient to affect soil microbial biomass significantly. Increased biomass N contents help improve N storage by soil micro-organisms in soils under long-term organic farming.
- Autor*innen der BOKU Wien:
- Friedel Jürgen Kurt
- Find related publications in this database (Keywords)
- soil microbial biomass
- nutrient storage function
- nitrogen mineralization
- organic farming