This is a neat experiment that can be replicated anywhere easily with the planting of a three by four grid. Again the results are fully consistent with many other tests out there and what remains most important is that the soil is left in far better condition with better water holding capacity and real nutrient retention as well.
I wrote a lot on biochar during the first three years of this blog and it welcome to see the work steadily continue and also make real inroads into agricultural practice.
For the uninitiated, this is the technology that will tame all soils and tropical soils in particular. With it we can feed tens of billions.
The picture here is showing us that all this knowledge is getting down into the field and that making this stuff is no real hardship. Folks are relearning old skills.