@article{fdi:010081032,
  title = {{E}ffects of the earthworm {P}ontoscolex corethrurus on rice {P} nutrition and plant-available soil {P} in a tropical {F}erralsol},
  author = {{T}rap, {J}ean and {B}lanchart, {E}ric and {R}atsiatosika, {O}. and {R}azafindrakoto, {M}. and {B}ecquer, {T}hierry and {A}ndriamananjara, {A}. and {M}orel, {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e conducted a greenhouse experiment in mesocosms for 28 days to assess the effects of the endogeic earthworm {P}ontoscolex corethrurus on plant-available soil phosphorus ({P}) and rice ({O}ryza sativa) {P} nutrition in a {M}alagasy {F}erralsol. {T}o assess plant-available soil {P}, we determined the {L}-value by measuring the specific activity of {P} taken up from the soil by rice and by applying the isotopic dilution principle. {D}espite earthworm mortality, {P}. corethrurus significantly increased rice shoot biomass (+26%) and {P} nutrition (+65%), confirming that the soil used for the experiment was {P}-deficient. {T}he {L}-value also markedly increased from 6.8 +/- 0.9 to 14.2 +/- 1.3 mg {P} mesocosm(-1) in the presence of {P}. corethrurus. {W}e estimated that the orthophosphate ions released due to earthworm mortality contributed to 30% of the {L}-value increase. {W}e attributed the remaining 70% increase to the solubilization of native soil {P} during its transit through the digestive tract. {T}hereafter, we discussed the sources of uncertainty associated with the {L}-value calculation and their utilization to assess earthworm effects on {P} availability in further studies.},
  keywords = {{E}ndogeic earthworms ; {P}-32-labeling ; {I}sotopic dilution ; {L}-value ; {U}pland rice ; {M}adagascar ; {MADAGASCAR} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{A}pplied {S}oil {E}cology},
  volume = {160},
  numero = {},
  pages = {103867 [5 ]},
  ISSN = {0929-1393},
  year = {2021},
  DOI = {10.1016/j.apsoil.2020.103867},
  URL = {https://www.documentation.ird.fr/hor/fdi:010081032},
}