@article{article_335329, title={Effects of long-term tillage systems on aggregate-associated organic carbon in the eastern Mediterranean region of Turkey}, journal={Eurasian Journal of Soil Science}, volume={7}, pages={51–58}, year={2018}, DOI={10.18393/ejss.335329}, author={Acar, Mert and Celik, İsmail and Günal, Hikmet}, keywords={Aggregation,Mediterranean,soil organic carbon,soil tillage}, abstract={<p> <span style="font-size:10.0pt;line-height:115%; font-family:"Cambria","serif";mso-fareast-font-family:"Times New Roman"; mso-bidi-font-family:"Times New Roman";mso-ansi-language:TR;mso-fareast-language: EN-US;mso-bidi-language:AR-SA;mso-bidi-font-style:italic">The stability of aggregates plays a vital role in preserving and long term storing of soil organic carbon (SOC). In this study, the long-term (2006-2014) effects of six tillage systems on aggregate-associated SOC were investigated in a field experiment conducted under Mediterranean conditions. The tillage treatments were; c </span> <span style="font-size:10.0pt;line-height:115%;font-family:"Cambria","serif"; mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman"; mso-ansi-language:TR;mso-fareast-language:EN-US;mso-bidi-language:AR-SA">onventional tillage with residue incorporated in the soil (CT1), conventional tillage with residue burned (CT2), reduced tillage with heavy tandem disc-harrow (RT1), reduced tillage with rotary tiller (RT2), reduced tillage with heavy tandem disc harrow fallowed by no-tillage (RNT) for the second crop, and no tillage (NT). The most frequently encountered aggregates in all tillage systems were at 4.0-2.0 mm size and the least frequently found aggregates were 1.0-0.5 mm. The mean weight diameter (MWD) value increased in the NT compared to the conventional tillage practices at the rates of 137% and 204%, respectively at 0-15 cm soil depth. Aggregate-associated SOC contents in 0-15 cm depth were higher under conservation tillage systems. However, the highest SOC at 15-30 cm depth were greater mainly in conventional tillage systems as 9.4% for both CT1 and CT2. The results indicated that conservation tillage systems had greater aggregation and carbon storage at the soil surface. </span> <br> </p>}, number={1}, publisher={Türkiye Toprak Bilimi Derneği}