Biochemical thresholds to differentiate mineralizing and stabilizing organic waste amendments for soil carbon management
Sirine Ridene·Chiraz Abbes·Haithem Bahri·Safya Menasseri-Aubry·Lotfi Khiari·Rim Benjannet·Mohamed Annabi
Introduction Identifying organic amendments that can retain stable organic carbon is essential for improving soil health and mitigating greenhouse gas emissions. Methods This study assessed the carbon stability of 104 fertilizing residual materials (including manure) using a biochemical fractionation method (Van Soest) and a standardized 91-day incubation protocol. Two kinetic parameters, residual organic carbon and the mineralization rate constant, were derived from first-order kinetic modeling