Submitted to: Book Chapter
Publication Type: Book / Chapter
Publication Acceptance Date: 6/3/2021
Publication Date: 6/27/2022
Citation: Suarez, D.L., Skaggs, T.H. 2022. Equilibrium soil chemistry submodels. In: Ahuja, L.R., Keresbaum, K.C. and Wendroth, O. editors. Modeling Processes and Their Interactions in Cropping Systems. Hoboken, NJ: John Wiley & Sons, Inc. 179-201.
Technical Abstract: The inorganic composition of soil water impacts biological, chemical, and physical processes in the soil. Plant growth (biomass) is impacted by the availability of essential nutrients as well as the toxicity of specific elements, ion imbalances, and overall salinity. The soil solution composition also impacts water transport, runoff, and erosion as well as transport of individual ions via interaction with the soil mineral phase. Complex models attempting simulation of soil and plant processes including solute transport, nutrient and solution chemistry impacts on plant growth, and water transport must in turn be able to simulate major chemical processes that impact solution chemistry. Important chemical processes include dissolution-precipitation of minerals, ion exchange, ion adsorption and oxidation-reduction. In this chapter we review chemical process models used in equilibrium soil chemistry submodels.