From: poutnik4nntp@gmail.com   
      
   Dne 14/11/2016 v 16:36 dlzc napsal(a):   
   > Dear Martin Brown:   
      
   >>>   
   >>> The source water contains:   
   >>> - Potassium > 90 ppm   
   >>> - Ammonium as NH4-N > 61 ppm   
   >>> - Phosphate > 90 ppm   
   >>> - soluble Iron and Manganese (not permanganate) are   
   >>>   present at elevated levels, but not toxically high   
   >>>   
   >>> Need at least a factor of 10 reduction in Potassium,   
   >>> "Ammonium", and Phosphate   
   >>   
   >> Why?   
   >   
   > The crops being grown, suffer if those contaminants are that high.  I   
   suspect also that the fertilizers being applied "by prescription" also carry   
   these as cations.  So they'd have to get a water analysis a lot more often...   
   >   
   I would not call potassium, ammonium and phosphate   
   as contaminants, but fertilizers used for the primary irrigation,   
   or added and dissolved in leaving water.   
      
   Perhaps the secondary plants like their concetrations   
   lower than the primary ones.   
      
   What about switching the order ?   
      
   --   
   Poutnik ( The Pilgrim, Der Wanderer )   
      
   A wise man guards words he says,   
   as they say about him more,   
   than he says about the subject.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)