biochar

Cow manure, a long-time agricultural waste headache may be the basis for a new sustainable fertilizing trend – biochar made from manure
Soil scientist Margaret Ball M.S. ‘16, of Bio365, tends to plants grown in the biochar
Mitigating climate change with biochar?
via Wikipedia Mitigating climate change with biochar? Biochar can boost crop yields in poor soils
Biochar holds promise for removing emerging contaminants such as pharmaceuticals from treated wastewater
Lead researcher Marlena Ndoun, a doctoral student in Penn State’s Department of Agricultural and Biological