I have asked Solomon about his target values for potassium in his book and his response was that he had changed his mind on what they should be. He says that in his book he was interested in increasing the protein levels in the vegetables and fruits that he was growing. And that his thoughts were aimed more toward soils with a TCEC of around 12. He believes that potassium levels should be thought of as relating more directly to the TCEC of the soil you are growing in and that the crops you are growing also need to be taken into consideration. I would add to that the level of soil life is another factor that deserves some thought.
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Bigger is Better!
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