[NAFEX] Terra Preta

athagan at atlantic.net athagan at atlantic.net
Fri May 23 08:16:18 EDT 2008

I've been working with this in a very small way for about a year.   
There's a fair amount of info to be found on the net about terra preta  
and agrichar.  The charcoal needs to be fairly finely divided and I  
suspect, but cannot prove, that clay is a necessary part of the  


Quoting Ernest Plutko <ernestplutko at wiktel.com>:

> Has anyone tried adding charcoal to their garden soil?  Saw a science
> program on TV today showing how fertile some soils are in Amazonia
> because ancient farmers added charcoal to the generally infertile
> soils of the rainforest.  Beware though because a lot of "charcoal"
> for grilling is made from coal and clay.  Some charcoal sold is real
> wood charcoal. You can make your own charcoal fairly easily in your
> yard from hardwood chunks.  The program did suggest that unknown
> bacteria in the tropical Terra Preta might have a role in the
> fertility by breaking down organics.  I am going to make some
> charcoal and try out this interesting concept.
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