[Terrapreta] Soil test and CEC

[rukurt at westnet.com.au]

Sean K. Barry wrote:
> Hi Michael,
>  
> I would like to mention again (most recently in response to Jim Mason 
> about using plastic as a feedstock source for charcoal) that one of 
> the most important reasons for using a biomass feedstock to make 
> charcoal (i.e. biochar) for amendment into soil is that the plants 
> which constitute that biomass take CO2 out of the atmosphere when they 
> grow.  Thus we harvest carbon from the atmosphere and sequester it in 
> soil.  Terra Preta soils formed from already sequestered carbon (e.g. 
> Victorian brown coal, peat, etc.) will not do this.
And then there are rubber products made from natural rubber.


Kurt