Soil improver, waste recycler and atmospheric carbon capturer – there’s a lot of excitement about the potential benefits of biochar. Equally, there are a lot of unknowns about whether that potential will be realised in practice.
Produced from heating organic biomass to very high temperatures under low oxygen conditions by a process called pyrolysis, biochar is a carbon-rich charcoal-like substance, which can be used to store carbon dioxide taken from the atmosphere by plants.
See also: How natural fungi can be encouraged to aid crop production
That opens the possibility for its use in climate change mitigation strategies, says Joe Stanley, head of training partnerships at the Allerton Project, which is one of the field trials sites for a £4….
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