I posted this to Realclimate:
The co-benefits of Biochar must also be considered beyond Bio-fuel gains; 3X fertility,17% less water use, Massive fungi (Glomalin) and wee-beastie microbes to worms, are sequestered carbon adding to that of the Biochar which in Terra Preta soils has C13 tested to 7000 years.
Dr. Lukas reports 10X N2O soil emission reductions:
Beyond Zero Emissions interviews Dr Lukas Van Zweitan senior research scientist of the NSW Department of Primary Industries (DPI). Who is working hand-on with soil research focusing on Bio Char (Terra Preta de Indio / Agri Char)
“we’ve found with some of the biochars in that we’ve had very, very significant reductions in nitrous oxide emissions from the soil; between five- and ten-fold reductions in nitrous oxide emissions.”
http://beyondzeroemissions.org/2008/...ls-zero-carbon
Erich