Effects of short-term soil management practices on soil carbon and nitrogen sequestration and some physical and chemical characteristics as well as soil aggregate stability in KhorasanRazavi Province,

ABSTRACT: The unsuitable soil management practices and neglecting the principles of sustainable utilization of agricultural land could escalate soil organic loss, soil structure deterioration and last but not least soil fertility. Preserving the status quo will surely result in more abandoned arable lands losing their strength. Even in some severe cases the condition would proceed in such a pace that soil virtually loses its whole fertility and goes toward a real desert milieu. This newborn, acts such an unceasing source of sediment for water and wind erosion. This study set out to evaluate the function of different soil management practices on carbon sequestration, some soil physical and chemical properties, and soil erodibility in three replicates according to the nested experimental design with three treatments (no-tillage, minimum tillage, conventional tillage). Chenaran, KhorasanRazavi province, Iran was chosen to give a demonstration of how it all worked out. As the results give indication, no-tillage system with 45167.4 and 3893.43, conventional tillage with 31463.9 and 2712.19 kg.ha-1 for carbon and nitrogen sequestration respectively, show the maximum and minimum values. Changing soil management plans from no-tillage to conventional tillage simultaneously changed soil bulk density from 1.41 to 1.29 gram per cubic centimeter. Comparing soil stability under different conditions shows that no-tillage and minimum-tillage result in better outcome rather than conventional tillage. What’s more, no-tillage system represents the maximum quantities of electro-conductivity (that is 1.78 dS. m-1) and the lowest for acidity (that is 7.65) while in contrast, conventional tillage stands for the minimum electro-conductivity (that is 1.19dS. m-1) and the maximum acidity (7.77).