[Terrapreta] vascular elements

[Kevin Chisholm]

Dear M

MFH wrote:
>
> My (perhaps) simplistic response is that coal is formed under 
> substantial temperatures and pressures. I’d suggest that this leaves 
> it biologically-inert.
>

Not to be contrary, but I would suggest that just the opposite may be 
the case... there are many chemicals in coal that may retard nearby 
biological activity.

Consider an artificial reef in the ocean... it could be made from any 
kind of material that sinks... ships, rocks, tires, oil rigs, engine 
blocks, concrete sidewalk blocks, old pavement, etc. The substrate 
material is not important, but when the "architecture" is provided, 
marine life flourishes in that area.

Of course, if a sunken ship was loaded with toxins, herbicides or 
pesticides, that would not be very nice. :-)

Kevin
>
> M
>
> ------------------------------------------------------------------------
>
> *From:* terrapreta-bounces at bioenergylists.org 
> [mailto:terrapreta-bounces at bioenergylists.org] *On Behalf Of *Roy Lent
> *Sent:* Sunday, 1 June 2008 11:21 AM
> *To:* terrapreta at bioenergylists.org
> *Subject:* [Terrapreta] vascular elements
>
> On Sat, May 31, 2008 at 4:54 PM, Richard Haard <richrd at nas.com 
> <mailto:richrd at nas.com>> wrote:
>
> On May 31, 2008, at 2:43 PM, Roy Lent wrote:
>
>
>
> 1. Is it possible that low grade lignite coal could give the same TP 
> effect in soil that charcoal does?
>
> no (no remnants of vascular elements)
>
> I've seen xylem rings in coal. These are not vascular elements? What 
> function do they serve in TP?
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> Terrapreta mailing list
> Terrapreta at bioenergylists.org
> http://tech.groups.yahoo.com/group/biochar/
> http://terrapreta.bioenergylists.org
> http://info.bioenergylists.org