@article{fdi:010021114,
  title = {{P}hosphorus in soil and {B}rachiaria decumbens plants as affected by the geophagous earthworm {P}ontoscolex corethrurus and {P} fertilization},
  author = {{P}atron, {J}. {C}inco and {S}anchez, {P}. and {B}rown, {G}.{G}. and {B}rossard, {M}ichel and {B}arois, {I}. and {G}utierrez, {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A} green house experiment was performed using the radioisotope 32{P} to study the effects of earthworms (#{P}ontoscolex corethrurus$) and {P} fertilization on #{B}rachiaria decumbens$ pasture production and {P} dynamics in a {P}-limited soil from a pasture in {V}eracruz, {M}exico. {T}wo fertilization levels (0 and 10 kg/ha {P}) were applied, while the soil {P} pool was labelled with 10mg 32{P}/pot (equivalent to 1.6 kg {P}/ha). {A}t harvest (51d) measurements included shoot and root biomass, total, inorganic, organic and exchangeable {P} in the soil and earthworm castings, mycorrhizal infection in roots, and earthworm populations. {F}ertilization with 10 kg/ha (injected {P}) increased shoot biomass by almost 10 times and root biomass by three times. {E}arthworms were only important for biomass production and {P} uptake with 10 kg/ha {P}, where despite significant yield reductions, more 32{P} fertilizer was imported into plants and the coefficient of 32{P} fertilizer use was significantly higher. {O}n the other hand, treatments with earthworms tended to have lower organic {P} and higher available-{P} contents. {B}oth fertilization and earthworms had a significant negative effect on root infection by {VAM}. {T}otal {P} contents of earthworms was high (0.4%), and 32{P} derived from the fertilizer reached from 3 to 4% of the total at harvest. {E}arthworm castings were richer in total {P} and especially organic {P}, than uningested soil. {B}y ingesting soil rich in organic {P}, producing large amounts of castings ({P}-rich microsites), and stimulating {P} mineralization processes in soils, #{P}. corethrurus$ forms an important component of the soil {P} cycle, and further research should pay attention to their potential as priming agents within the soil, and their effects on plant growth and nutrient uptake. ({R}{\'e}sum{\'e} d'auteur)},
  keywords = {{PATURAGE} ; {PLANTE} {FOURRAGERE} ; {NUTRITION} {MINERALE} ; {LOMBRIC} ; {FERTILISATION} {DU} {SOL} ; {PHOSPHORE} ; {BIOMASSE} ; {PRODUCTION} {VEGETALE} ; {INFECTION} ; {MYCORHIZE} ; {ETUDE} {EXPERIMENTALE} ; {MEXIQUE} ; {SALAZAR}},
  booktitle = {6th international symposium on earthworm ecology},
  journal = {{P}edobiologia},
  volume = {43},
  numero = {6},
  pages = {547--556},
  ISSN = {0031-4056},
  year = {1999},
  URL = {https://www.documentation.ird.fr/hor/fdi:010021114},
}