HYSWASOR — Simulation Model of Hysteretic Water and Solute Transport in the Root Zone

  • C. Dirksen
  • J. B. Kool
  • P. Koorevaar
  • M. Th. van Genuchten
Part of the Advanced Series in Agricultural Sciences book series (AGRICULTURAL, volume 20)


In the context of a book in memory of Eshel Bresler, the merit of numerical computer models to simulate simultaneous water and solute transport in the unsaturated and saturated zones does not need to be documented. We mention just two areas of application. Sound irrigation management aims at optimizing field water and salt balances such that a healthy environment for crop growth is created and maintained. To accomplish this requires not only a quantitative understanding of the basic processes involved, but also of the interactions between them. This complex problem can hardly be tackled without the help of computers. Regulating the movement of harmful solutes, such as pesticides, herbicides, and hydrocarbons, through the environment is an even more complex problem. Not only routes, but also travel times and concentration changes due to physical (e.g., adsorption) and chemical processes need to be known. From the beginning Bresler contributed significantly to the development of numerical models of water and solute transport (Bresler and Hanks 1969; Bresler 1973) and later of root water uptake (Bresler et al. 1982).


Salt Tolerance Hydraulic Head Solute Transport Pressure Head Soil Column 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • C. Dirksen
    • 1
  • J. B. Kool
    • 2
  • P. Koorevaar
    • 1
  • M. Th. van Genuchten
    • 3
  1. 1.Department of Water ResourcesWageningen Agricultural UniversityWageningenThe Netherlands
  2. 2.Hydro Geologic IncHerndonUSA
  3. 3.USDA-ARSUS Salinity LaboratoryRiversideUSA

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