Turfmd and Skip, I am inline with your thought processes. After a greater understanding and learning, I try to make the practical applied knowledge as simple as possible. Looking at Terra Preta mineral soils, and the future of biochar in a biobased economy, it all made more and more sense to look in this direction. Humic substances have their place in building/improving mineral soil health, stabilizing N and P, and as a powerful chelator of Micros. Should we call Humic Substances a "Micronutrent"?