Living roots enhance the decomposition of dead roots rather than native organic matter in rice soils

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 Living roots play a pivotal role in accelerating the decomposition of dead roots in rice soils, primarily through the stimulation of microbial activity in the rhizosphere. As living roots release exudates rich in carbon and enzymes, they create biologically active microsites that promote the breakdown of recently added organic residues rather than older, more stable native soil organic matter. This “priming effect” enhances nutrient mineralization from dead roots, improving nitrogen and carbon cycling within the soil–plant system. In rice-based ecosystems, where periodic flooding and anaerobic conditions often slow decomposition, the presence of active root systems significantly boosts microbial processes and promotes more efficient turnover of fresh organic inputs. Consequently, living roots act as catalysts for residue decomposition, supporting soil fertility, nutrient availability, and overall sustainability in rice production systems.

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#RiceSoils #RootDecomposition #SoilOrganicMatter #PrimingEffect #RhizosphereBiology #MicrobialActivity #NutrientCycling #CarbonDynamics #RiceEcosystems #SoilFertility #SustainableAgriculture #ResidueManagement #SoilHealth #RootEcology #Agroecosystems





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