Banjar
The idea for agrichar, which is essentially carbon, came from soil studies in South America, where slash and burn agriculture over many centuries has left very fertile soils. Here is a link to the ABC article:
http://www.abc.net.au/catalyst/stories/s2012892.htm
And here a link to the NSW DPI research:
http://www.dpi.nsw.gov.au/research/updates/issues/may-2007/soils-offer-new-hope
Billy
