Fig. 3From: Water-extractable organic matter and its fluorescence fractions in response to minimum tillage and organic farming in a CambisolHumification indexes of water-extractable organic matter at 0–8-cm and 12–25-cm soil of all treatments. OPL organic farming + plowing tillage, OMT organic farming + minimum tillage, IPL integrated farming + plowing tillage, IMT integrated farming + minimum tillageBack to article page