@article{fdi:010052292,
  title = {{S}ilicon transfers in a rice field in {C}amargue ({F}rance)},
  author = {{D}esplanques, {V}. and {C}ary, {L}. and {M}ouret, {J}. {C}. and {T}rolard, {F}. and {B}ourrie, {G}. and {G}rauby, {O}. and {M}eunier, {J}. {D}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e conducted a study of the biogeochemical cycle of silicon in a rice field in {C}amargue ({F}rance) in order to evaluate the role of biogenic, silicon particles ({BS}i) in the cycle. {O}pal-{A} biogenic particles (phytoliths, diatoms...), which dissolve more rapidly than other forms of silicate usually present in soils, are postulated to represent the easiest bioavailable {S}i for rice. {W}e found 0.03-0.06 wt.% of {BS}i in soils (mainly phytoliths). {T}his value is lower than other values from the literature. {E}ach year, the exportation of {BS}i from rice cultivation is 270 80 kg {S}i ha(-1). {W}e show that {BS}i input by irrigation is mostly composed of diatoms and we estimate it at 100 kg {S}i ha(-1) year(-1). {T}his value is more than a third of the annual {S}i need for rice. {T}he budget of the dissolved silicon ({DS}i) fluxes gives the following results: the atmospheric and irrigation inputs represents 1% and roughly 10%, respectively, of the annual need for rice; the drainage and infiltration outputs represent 17 +/- 14 and 12 +/- 9 kg {S}i ha(-1) year(-1), respectively; the balance of our budget shows that at least 170 kg {S}i ha(-1) year(-1) are exported from the soil. {I}f we consider the soil {BS}i as the only source of dissolved silicon, this stock could be exhausted in 5 years. (c) 2005 {E}lsevier {B}.{V} {A}ll rights reserved.},
  keywords = {silicon cycle ; rice ; biogenic silica ; {C}amargue},
  booktitle = {},
  journal = {{J}ournal of {G}eochemical {E}xploration},
  volume = {88},
  numero = {(1-3) {S}pecial {I}ss. {SI}},
  pages = {190--193},
  year = {2006},
  DOI = {10.1016/j.gexplo.2005.08.036},
  URL = {https://www.documentation.ird.fr/hor/fdi:010052292},
}