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bonsaiTALK Master Craftsman
Join Date: Apr-2005
Location: The Hague
Country: Netherlands
Posts: 653
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I believe CEC is part of this, but I don't think it is the whole of it. There seem to be some specific chemical processes between clay and organic materials that are not covered by CEC.
This is something I'm actually pretty interested about, because I've read about this relationship between clay and organics in several places, but there seems to be very little empirical evidence that it actually makes a whole lot of a difference compared to purely inorganic mixtures which seem to work fine for many people. Consider hydroponics even. Really what are the benefits of that hand of potting soil in your mix?
Stefan
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Whenever you find that you are on the side of the majority, it is time to reform. - Mark Twain
Never let your sense of morals get in the way of doing what's right. - Isaak Asimov
The most savage controversies are those about matters as to which there is no good evidence either way. - Bertrand Russell
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