Phuong-Thi Ngo auteur aut IRD Rumpel C. auteur aut IRD Quoc-Anh Ngo auteur aut IRD Alexis M. auteur aut IRD Velasquez Vargas G. auteur aut IRD Mora Gil M. de la L. auteur aut IRD Dinh-Kim Dang auteur aut IRD Jouquet Pascal auteur aut IRD text journalArticle eng text/pdf born digital access This study characterized the carbon and phosphorus composition of buffalo manure, its compost and vermicompost and investigated if presence of bamboo biochar has an effect on their chemical and biological reactivity. The four substrates were characterized for chemical and biochemical composition and P forms. The biological stability of the four substrates and their mixtures were determined during an incubation experiment. Their chemical reactivity was analyzed after acid dichromate oxidation. Biological reactivity of these substrates was related to their soluble organic matter content, which decreased in the order buffalo manure > compost > vermicompost. Phosphorus was labile in all organic substrates and composting transformed organic P into plant available P. The presence of biochar led to a protection of organic matter against chemical oxidation and changed their susceptibility to biological degradation, suggesting that biochar could increase the carbon sequestration potential of compost, vermicompost and manure, when applied in mixture. specialized AMENDEMENT DU SOL FUMURE ENGRAIS PHOSPHORE ORGANIQUE CARBONE ORGANIQUE COMPOST MATIERE ORGANIQUE SUBSTRAT COMPOSITION CHIMIQUE OXYDATION DEGRADATION BIOLOGIQUE SPECTROSCOPIE ANALYSE STATISTIQUE ETUDE EXPERIMENTALE ETUDE COMPARATIVE VERMICOMPOST BIOCHAR BAMBOU VIET NAM 076AGRO05 068PROSOL 068ANASOL 148 401-407 2013 0960-8524 https://www.documentation.ird.fr/hor/fdi:010058286 10.1016/j.biortech.2013.08.098 0960-8524 [F B010058286] https://www.documentation.ird.fr/hor/fdi:010058286 https://www.documentation.ird.fr/intranet/publi/depot/2013-10-01/010058286.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2013-10-01 2014-04-25 fdi:010058286 fre