Tuesday, 8 November 2005
17

This presentation is part of: SOM, C Dynamics, and GHG Emissions: II

Tillage and Rotation Induced Differences in Soil Organic Matter Content and Quality Measured by Several Methods.

Anita Gal, Peter Hegymegi, Erika Micheli, Cliff Johnston, and Tony J. Vyn.

The purpose of the study was to assess the consequences of long-term (28-years) tillage and crop rotation systems on soil organic carbon sequestration with special emphasis on the most stable organic matter fraction, the humic substances. Organic carbon (OC) content of composite soil samples was determined by dry combustion (LECO CHN analyzer), by wet combustion (Walkley-Black method), by loss on ignition and by FTIR (Fourier Transform Infrared Spectroscopy). The molecular composition of the fractionated humic and fulvic acids was characterized by FTIR.

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