[Terrapreta] Low Temp Chars

[Sean K. Barry]

Hi Andrew,

It is claimed that microorganisms decompose or digest bio-oils (VM, pyroligneous acids, acetic acid, wood vinegar, etc.) in charcoal
This may in fact be true and there maybe even some evidence to support those claims. But, I don't know if this precludes any sequestration of the carbon in those substances.  When the microorganisms free up plant nutrients from the bio-oils, immediately when they decompose the bio-oils or when the microorganisms die, then the roots of plants will likely take them up.  These nutrients (N, P, K, S, Ca, Fe, Mg,  etc.), however, do not include carbon-C. Growing plants do not absorb soil-based carbon.  They get it from the atmosphere in the form of CO2.

Regards,

SKB
  ----- Original Message ----- 
  From: andrew<mailto:list at sylva.icuklive.co.uk> 
  To: terrapreta at bioenergylists.org<mailto:terrapreta at bioenergylists.org> 
  Sent: Wednesday, April 25, 2007 12:35 PM
  Subject: Re: [Terrapreta] Low Temp Chars


  On Wednesday 25 April 2007 15:52, Tom Miles wrote:

  > "Low temperature woody charcoal (not grass or high cellulose) has
  > an interior layer of bio-oil condensates that microbes consume and
  > is equal to glucose in its effect on microbial growth (Christoph
  > Steiner, EACU 2004). 

  Which sort of points to the probability that this portion of the char 
  is not sequestered.

  AJH

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