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Originally Posted by Turtle
Thinking.... 
1) I don't know about warmer soil helping microorganisms; so many other variables come into play.
2)I just learned about evaporation tray set-ups for measuring evaporation rates (see Global Dimming thread). They said that photons striking water account for most evaporation rather than wind, or temp, or humidity. Since the charcoal is not only absorbing heat, but also blocking the soil under it from the Sun, I don't think evaporation increase is expected.
3) Early in this thread, Uncle Al recommends charcoal in potted plants & gives some justifications.
Off to read your link: http://www.eprida.com/hydro/
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Thanks - that makes sense to me
-check out the first tread i gave -the one on "tera preta saving soil & planet etc". it gives one of the best run downs yet on terra preta soils.
The eprida link just confused me. What is the story with charchol and hydrogen production? The eprida link dose't seem to have been updated since 2002?
Off to read global dimming link
Thanks
PS
Does anyone know how to coppice? Seems the English used this system for centuries to produce charchol as well as preserve their forests. How did they make charchol?
I would love to make my own it seems so expensive.
