[Terrapreta] vascular elements

[Roy Lent]

On Sat, May 31, 2008 at 4:54 PM, Richard Haard <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?
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