02123naa a2200313 a 450000100080000000500110000800800410001902400550006010000210011524501670013626000090030352011490031265000160146165000190147765000110149665000130150765000130152065000240153365000190155765000160157665000200159265000170161265000230162970000250165270000170167770000170169470000170171177300810172820812032021-11-11       2018    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1080/10256016.2017.13771962DOI1 aINACIO, C. de T.  aThe relative isotopic abundance (delta13C, delta15N) during composting of agricultural wastes in relation to compost quality and feedstock.h[electronic resource]  c2018  aVariations in the relative isotopic abundance of C and N (delta13C and delta15N) were measured during the composting of different agricultural wastes using bench-scale bioreactors. Different mixtures of agricultural wastes (horse bedding manure + legume residues; dairy manure + jatropha mill cake; dairy manure + sugarcane residues; dairy manure alone) were used for aerobic- thermophilic composting. No significant differences were found between the delta13C values of the feedstock and the final compost, except for dairy manure + sugarcane residues (from initial ratio of -13.6 ± 0.2%° to final ratio of -14.4 ± 0.2%°). Delta15N values increased significantly in composts of horse bedding manure + legumes residues (from initial ratio of +5.9 ± 0.1%° to final ratio of +8.2 ± 0.5%°) and dairy manure + jatropha mill cake (from initial ratio of +9.5 ± 0.2%° to final ratio of +12.8 ± 0.7%°) and was related to the total N loss (mass balance). Delta13C can be used to differentiate composts from different feedstock (e.g. C3 or C4 sources). The quantitative relationship between N loss and delta15N variation should be determined.  aAgriculture  aBiodegradation  aCarbon  aIsotopes  aNitrogen  aOrganic fertilizers  aOrganic wastes  aAgricultura  aBiodegradação  aFertilizante  aResíduo Orgânico1 aMAGALHÃES, A. M. T.1 aSOUZA, P. O.1 aCHALK, P. M.1 aURQUIAGA, S.  tIsotopes in Environmental and Health Studiesgv. 54, n. 2, p. 185-195, 2018.