@article{fdi:010082814,
  title = {{A}groecosystem diversification with legumes or non-legumes improves differently soil fertility according to soil type},
  author = {{S}auvadet, {M}arie and {T}rap, {J}ean and {D}amour, {G}. and {P}lassard, {C}. and {V}an den {M}eersche, {K}. and {A}chard, {R}. and {A}llinne, {C}. and {A}utfray, {P}. and {B}ertrand, {I}. and {B}lanchart, {E}ric and {D}eberdt, {P}. and {E}nock, {S}. and {E}ssobo, {J}. {D}. and {F}reschet, {G}. {T}. and {H}edde, {M}. and {V}irginio, {E}. {D}. and {R}abary, {B}. and {R}akotoarivelo, {M}. and {R}andriamanantsoa, {R}. and {R}hino, {B}. and {R}ipoche, {A}. and {R}osalie, {E}. and {S}aj, {S}. and {B}ecquer, {T}hierry and {T}ixier, {P}. and {H}armand, {J}. {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{P}lant diversification through crop rotation or agroforestry is a promising way to improve sustainability of agroecosystems. {N}onetheless, criteria to select the most suitable plant communities for agroecosystems diversification facing contrasting environmental constraints need to be refined. {H}ere, we compared the impacts of 24 different plant communities on soil fertility across six tropical agroecosystems: either on highly weathered {F}erralsols, with strong {P} limitation, or on partially weathered soils derived from volcanic material, with major {N} limitation. {I}n each agroecosystem, we tested several plant communities for diversification, as compared to a matching low diversity management for their cropping system. {P}lant residue restitution, {N}, {P} and lignin contents were measured for each plant community. {I}n parallel, the soil under each community was analyzed for organic {C} and {N}, inorganic {N}, {O}lsen {P}, soil p{H} and nematode community composition. {S}oil potential fertility was assessed with plant bioassays under greenhouse controlled climatic conditions. {O}verall, plant diversification had a positive effect on soil fertility across all sites, with contrasting effects depending on soil type and legumes presence in the community. {C}ommunities with legumes improved soil fertility indicators of volcanic soils, which was demonstrated through significantly higher plant biomass production in the bioassays (+18%) and soil inorganic {N} (+26%) compared to the low diversity management. {C}ontrastingly, communities without legumes were the most beneficial in {F}erralsols, with increases in plant biomass production in the bioassays (+39%), soil {O}lsen {P} (+46%), soil {C} (+26%), and p{H} (+5%). {P}iecewise structural equation models with {S}hipley's test revealed that plant diversification impacts on volcanic soil fertility were related to soil {N} availability, driven by litter {N}. {M}eanwhile, {F}erralsols fertility was related to soil {P} availability, driven by litter {P}. {T}hese findings underline the importance of multifactorial and multi-sites experiments to inform trait-based frameworks used in designing optimal plant diversification in agroecological systems.},
  keywords = {{C}-{N}-{P} cycling ; {F}unctional traits ; {L}egumes ; {N}ematodes ; {P}lant diversification ; {T}ropical soils ; {CAMEROUN} ; {COSTA} {RICA} ; {MADAGASCAR} ; {MARTINIQUE} ; {MARTINIQUE} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{S}cience of the {T}otal {E}nvironment},
  volume = {795},
  numero = {},
  pages = {148934 [11 p.]},
  ISSN = {0048-9697},
  year = {2021},
  DOI = {10.1016/j.scitotenv.2021.148934},
  URL = {https://www.documentation.ird.fr/hor/fdi:010082814},
}