Redox interface-associated organo-mineral interactions: A mechanism for C sequestration under a rice-wheat cropping system

Abstract Paddy soils constitute the largest anthropogenic wetlands on earth. However, the biogeochemical cycles of iron (Fe) oxides and organic compounds at the redox interfaces in paddy soils are poorly understood. Here, we propose a conceptual mechanism based on our data set, which links seasonal turnover of soil aggregates and the organo-mineral associations at the aggregate interfaces in the rice-wheat cropping system. Our results showed that the application of organic amendments significantly ( P