Soil organic carbon in long–term experiments: comparative analysis in Slovakia and Serbia
¹Slovak Agricultural University in Nitra, Faculty of Agrobiology and Food Resources, Tr. A. Hlinku 2, SK949 76 Nitra, Slovak Republic
²Institute of Field and Vegetable Crops Novi Sad, Department for Maize, RS21000 Novi Sad, Maxim Gorki 30, Serbia
³University of Novi Sad, Faculty of Agriculture, Department of Field and Vegetable Crops, Sq. Dositeja Obradovica 8, RS21000 Novi Sad, Serbia
⁴University of East Sarajevo, Faculty of Agriculture, Vuka Karadzića 30, Istočno Novo Sarajevo, Republic of Srpska, Bosnia and Herzegovina
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Soil organic carbon plays an important role in a long-term agroecosystem productivity, in the global C cycle, maintaining a soil nutrient pool and improving its availability. The objective of this study is the assess the impacts of long–term cropping practices on SOC dynamics in Slovakia and Serbia. Soil C sequestration is a complex process that is influenced by many factors, such as agricultural practice, climatic and soil conditions. For the both location the initial SOC decline was followed with the C stabilization and possible increase where proper practices were used. More intensive crop management systems that maintained residue cover provided the greatest benefit towards increasing the quantity of mineralizable nutrients within the active fraction of soil organic carbon (SOC), as well as increasing C sequestration as SOC. Long–term field experiments have contributed significantly to our current knowledge of soil quality and have been used to study the influence of crop management, fertilizer application and tillage practices on SOC content.