[Microbeman, You are knowledgeable about organics, sure, but you will simply not let yourself know a few things. Namely, that organic soil will release nutrient WITHOUT a plant asking for it. Please, please, please prove this is wrong./QUOTE]
Sorry, I am guilty of not reading your whole post before responding to this. I have not said this so don't attribute it to me. What I have said is that in organic/natural growing nutrients are passed to the root systems via bacteria/archaea being devoured by protozoa; or by fungal hyphae interaction with roots; or in more limited fashion by nutrient fixing bacteria (archaea?). That's all. I have previously stated that roots stimulate the processes by releasing various carbon based compounds.