[Terrapreta] Exotic' species alter soil fertility

[Ruy Korscha Anaya de la Rosa]

Apparently our knowledge about soils is still limited and since the pros and
cons of a project depend on its specific situation, we have to study it on a
case-by-case basis.

Obviously the former applies to Terra Preta.

So, I wonder if someone has already found negative effects of applying a
specific kind of biochar to a specific kind of soil in a specific country,
which specific situation counteracts the benefits you all know about.

Ruy
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