305: Carbon Source Utilization by Microbial Communities in Soils under Organic and Conventional Farming Practice
(1997) Carbon Source Utilization by Microbial Communities in Soils under Organic and Conventional Farming Practice, in Insam, Dr. Heribert and Rangger, Dr. Andrea, Eds. Microbial Communities - Functional versus Structural Approaches, page pp. 109-120. Springer-Verlag Berlin.
Full text available as: |
Summary
In a long-term field trial in which organic and conventional agricultural systems were compared since 1978 we analyzed soil microbial biomass, microbial activity and substrate utilization patterns by the Biolog GN microplates. Microbial biomass and the Cmic -to-Corg ratio was distinctly higher in organic plots whilst the metabolic quotient qCO2 as an indicator of the energy requirement of soil microorganisms was lower. Substrate utilization profiles were affected by the different lon-term treatments, but also indicated differences of short-term effects like crop and soil management steps.
| Document Language: | English |
|---|---|
| Keywords: | Organic farming, microbial biomass, Cmic-to-Corg ratio, qCO2, substrate utilization patterns, functional diversity, Bodenfruchtbarkeit, DOK |
| Subject Areas: | Farming Systems Soil > Soil quality > Soil biology Environmental aspects > Biodiversity and ecosystem services |
| Research affiliation: | Switzerland > FiBL > Annual Crops |
| Orgprints ID Number: | 305 |
| Contact: | Fliessbach, Dr. Andreas |
| Deposited On: | 09 March 2003 |
| EPrint Type: | Book chapter |
| Published?: | Published |
| Peer Review Status: | Peer-reviewed and accepted |
| Related Links: | http://www.fibl.ch/forschung/anbautechnik-einjaehrig/dok/index.php |
Archive Staff Only: edit this record
