Mulvaney, Michael J.Graham, M.Xia, K.Barrera, Victor H.Botello, Rubén C.Saavedra Rivera, A. K.2016-04-192016-04-192012Presented at the American Society of Agronomy-Crop Science Society of America-Soil Science Society of America International Annual Meetings, Cincinnati, OH, 22 October 20127609_SOM_in_Andes_v2.pdfhttp://hdl.handle.net/10919/70218Organic matter stabilization is thought to be a process of physical protection and chemical recalcitrance. The determination of recalcitrant soil organic carbon (SOC) often relies on operational definitions provided by various fractionation techniques, usually particle size or density fractionation. However, it is unknown if these operational definitions represent true chemical recalcitrance.application/pdfen-USIn CopyrightConservation agricultureSoil managementSoilConservationConservation tillageSoil organic matterSoil organic carbon (soc) near-edge x-ray absorption fine structure (nexafs)Field ScalePresentation