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Retention of carbon(C)in arable soils has been considered as a potential mechanism to mitigate soil degradation and to sustain crop productivity.Hence,we appraised the 3-yr effect of different tillage and residue management practices on grain yield and soil organic C(SOC)accumulation under a rice(Oryza sativa L.)-wheat(Triticum aestivum L.)cropping system in the Indo-Gangetic Plains.