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  • IntlFi@aol.com
    We have some problems to remove the salt of the water we used for the irrigation This is for a 100 acre site which receives irrigation 6 months of the year
    Message 1 of 1 , Dec 1, 2005
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      We have some problems to remove the salt of the water we used for the
      irrigation

      This is for a 100 acre site which receives irrigation 6 months of the year
      (April through September).
      Daily flows range from 450 to 900 gallons per minute based on water
      production, evapotranspiration potential and precipitation.

      Water quality chemistry
      Total Dissolved Solids                            2500 mg/L
      Electrical Conductivity                            4000 umhos/cm
      Chloride                                                21     mg/L
      Sulfate                                                  2       mg/L
      Calcium                                                14     mg/L
      Magnesium                                           33     mg/L
      Potassium                                             60     mg/L
      Sodium Adsorption Ratio                        33.1
      Bicarbonate                                           2700 mg/L
      Sodium                                                 990   mg/L

      Annual leaching allows for the sodium to be washed from the root profile into
      the subsurface.
      Through the application of soil amendments (gypsum and sulfur) we adjust the
      effective SAR of the water to approximately 8 with an EC of 4800 umhos/cm.  An
      SAR of 8 corresponds to a sodium concentration of 615 mg/L, Calcium of 419
      mg/L and magnesium of 18 mg/L.  The sulfur provides pH control and the gypsum
      provides a calcium source to exchange with the sodium. 

      Thanks for your help.

      J. Til



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