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Carbon Source Utilization by Microbial Communities in Soils under Organic and Conventional Farming Practice

Fliessbach, Dr. Andreas and Mäder, Dr. Paul (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. Springer-Verlag Berlin, pp. 109-120.

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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.


EPrint Type:Book chapter
Keywords:Organic farming, microbial biomass, Cmic-to-Corg ratio, qCO2, substrate utilization patterns, functional diversity, Bodenfruchtbarkeit, DOK
Subjects: Farming Systems
Soil > Soil quality > Soil biology
Environmental aspects > Biodiversity and ecosystem services
Research affiliation: Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Soil Sciences
Related Links:http://www.fibl.ch/forschung/anbautechnik-einjaehrig/dok/index.php
Deposited By: Fliessbach, Dr. Andreas
ID Code:305
Deposited On:09 Mar 2003
Last Modified:12 Apr 2010 07:27
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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