[Terrapreta] alkaline soils

[Michael Bailes]

I am trying to interest Oz nurserymen to trial some char in potting mixes.
The first thing they are going to ask is "What will it do to the pH of my
potting  mix."
 Especially when one nursery produces a zillion, acid loving, camellias.

m

On 16/05/07, Christoph Steiner <Christoph.Steiner at uni-bayreuth.de> wrote:
>
> I have my doubts that "Terra Preta" is the solution for all agricultural
> constraints. Terra Preta was created to overcome the environmental
> constraints in the Amazon. Alkaline soils are not among them, the opposite
> is the case.
> Ash and most charcoal are alkaline. Therefore I recommend being cautious.
> But anyway it is very interesting to look what effect charcoal additions
> to alkaline soils have. For my knowledge this was not studied yet and
> alkalinity is a widespread problem.
>
> C. Steiner
>
>
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