@article{fdi:010086867,
  title = {{P}rediction of phosphorus sorption index and availability by {NIR} and {MIR} in soils in {M}adagascar},
  author = {{R}amaroson, {H}. {V}. and {B}ecquer, {T}hierry and {R}azafimahatratra, {H}. and {R}azakavololona, {A}. and {R}abeharisoa, {L}. and {R}akotondrazafy, {A}. {F}. {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he development of techniques for the rapid, inexpensive, and accurate determination of the phosphorus ({P}) availability and sorption index ({PSI}) in soils is important for {P} management in highly weathered tropical soils. {T}he applicability of near- and mid-infrared reflectance spectroscopy ({NIR} and {MIR}) as tools for estimating {P} availability and {PSI} was assessed over a wide range of highly weathered soils in {M}adagascar. {T}he predictions were based on chemometric methods using multivariate calibration models with partial least squares ({PLS}) regressions, and pedotransfer functions ({PTF}s). {C}hemometric methods failed to predict available {P} ({P}-resin). {H}owever, a {P} sorption index, determined as the {P} remaining in solution ({P}-rem), was estimated with acceptable accuracy with both {NIR} and {MIR} ({R}-cv(2) = 0.70 - 0.73; {R}-v(2) = 0.65 - 0.77; {SEP}(c) = 5.5 - 4.6 mg kg(-1)). {T}he {PTF}s showed that the {PSI} was well explained by iron oxide, gibbsite, and sand contents, all of these compounds being well predicted by {NIR} or {MIR} ({R}-v(2) > 0.70). {T}hese results indicate that {NIR} and {MIR} can be helpful for a rapid estimate of {PSI} of highly weathered ferralitic soils.},
  keywords = {diffuse reflectance spectroscopy ; chemometrics ; pedotransfer functions ; phosphorus sorption ; soil mineral composition ; highly weathered tropical soils ; {MADAGASCAR}},
  booktitle = {},
  journal = {{L}and},
  volume = {12},
  numero = {1},
  pages = {196 [14 p.]},
  year = {2023},
  DOI = {10.3390/land12010196},
  URL = {https://www.documentation.ird.fr/hor/fdi:010086867},
}