Modeling Phosphorus Transfer between Labile and Nonlabile Soil Pools : Updating the EPIC Model

  title={Modeling Phosphorus Transfer between Labile and Nonlabile Soil Pools : Updating the EPIC Model},
  author={Peter A. Vadas and Tore Krogstad and Andrew N. Sharpley},
Phosphorus transfer from agricultural soils to surface waters is an important environmental issue. Commonly used computer models like EPIC have not always been appropriately updated to reflect our improved understanding of soil P transformations and transfer to runoff. Our objectives were to determine if replacing EPIC’s constant sorption and desorption rate factor (0.1) with more dynamic rate factors can more accurately predict changes in soil labile P on addition to and depletion of P from… CONTINUE READING
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