Natural colloidal P and its contribution to plant P uptake.

  title={Natural colloidal P and its contribution to plant P uptake.},
  author={Daniela Montalvo and Fien Degryse and Mike J Mclaughlin},
  journal={Environmental science & technology},
  volume={49 6},
Phosphorus (P) bioavailability depends on its concentration and speciation in solution. Andisols and Oxisols have very low soil solution concentration of free orthophosphate, as they contain high concentrations of strongly P-sorbing minerals (Al/Fe oxyhydroxides, allophanes). Free orthophosphate is the form of P taken up by plants, but it is not the only P species present in the soil solution. Natural colloidal P (P associated with Al, Fe, and organic matter of sizes ranging from 1 to 1000 nm… CONTINUE READING
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