@article{fdi:010061797, title = {{S}oil nitrogen balance resulting from {N} fixation and rhizodeposition by the symbiotic association {A}nthyllis vulneraria/{M}esorhizobium metallidurans grown in highly polluted {Z}n, {P}b and {C}d mine tailings}, author = {{M}ahieu, {S}. and {E}scarre, {J}. and {B}runel, {B}. and {M}ejamolle, {A}. and {S}oussou, {S}ouhir and {G}aliana, {A}. and {C}leyet-{M}arel, {J}. {C}.}, editor = {}, language = {{ENG}}, abstract = {{T}he association of the legume {A}nthyllis vulneraria and the grass {F}estuca arvernensis, was found to be very efficient for the phytostabilisation of highly multi-metal contaminated mine tailings. {O}ur objective was to quantify the contribution of {A}nthyllis inoculated with its symbiotic bacteria {M}esorhizobium metallidurans to the soil {N} pool and to test whether a starter nitrogen fertilization may improve symbiotic nitrogen fixation and the growth of {F}estuca. {P}lants of {F}estuca and of {A}nthyllis inoculated with {M}. metallidurans were grown separately during eight months in pots filled with mine contaminated soil. {E}stimation of the {N} fluxes was realized using (15) {N} isotopic methods. {S}tarter {N} fertilization (28 kg {N} ha(-1)) improved symbiotic {N}-2 fixation and the growth of both species. {B}elowground {N} balance ({N} rhizodeposition - soil {N} uptake) of the non-fertilized {A}nthyllis at maturity was negative (-30.6 kg {N} ha(-1)). {H}owever, the amount of {N} derived from fixation, including above- and belowground parts, was 78.6 kg {N} ha(-1), demonstrating the ability of this symbiotic association to improve soil {N} content after senescence. i) soil {N} enrichment by the {N}-2-fixing symbiotic association occurs after plant senescence, when decaying leaves and shoots are incorporated into the soil; ii) application of a starter fertilization is an efficient solution to improve phytostabilisation of highly contaminated sites.}, keywords = {{N}itrogen fixation ; {R}hizodeposition ; {L}egumes ; {R}hizobium ; {M}etallophytes ; {P}hytostabilization ; {FRANCE}}, booktitle = {}, journal = {{P}lant and {S}oil}, volume = {375}, numero = {1-2}, pages = {175--188}, ISSN = {0032-079{X}}, year = {2014}, DOI = {10.1007/s11104-013-1941-4}, URL = {https://www.documentation.ird.fr/hor/fdi:010061797}, }