From: Kathryn Watts (graze-l_at_witt.ac.nz)
Date: 05/16/04

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Ian has posted some very good information about this.  I did note a typo in
the caluclation for critical values of K/Ca + Mg ratio
it is  K/39 over Ca/20 + Mg/12

Bit of a stutter, but all very good information.
Katy
  Ideal Ratios


  The Grass Staggers ratio*



  Critical value for grass staggers ratio is 2. 2



                               (k / 39)

               *         -----------------------

                       (Ca / 20) + (Mg / 1215)

  Other ratios:



  Ca : Mg  - 6 :1

  Mg : K    - 3 : 1

  K : Na     - 2 : 1

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