Modeling controlled nutrient release from polymer coated fertilizers: diffusion release from single granules.

@article{Shaviv2003ModelingCN,
  title={Modeling controlled nutrient release from polymer coated fertilizers: diffusion release from single granules.},
  author={Avi Shaviv and Smadar Raban and Elina Zaidel},
  journal={Environmental science & technology},
  year={2003},
  volume={37 10},
  pages={
          2251-6
        }
}
A comprehensive model describing the complex and "non-Fickian" (mathematically nonlinear) nature of the release from single granules of membrane coated, controlled release fertilizers (CRFs) is proposed consisting of three stages: i. a lag period during which water penetrates the coating of the granule dissolving part of the solid fertilizer in it ii. a period of linear release during which water penetration into and release out occur concomitantly while the total volume of the granules remains… CONTINUE READING

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