biochar
Noun
Meaning
biochar (countable and uncountable, plural biochars)
Charcoal that is used as a soil conditioner.
Examples
“The value of the new research is that manure can be a problem source, and anaerobic digestion using biochar serves to dispose of manure while producing methane to power the farm and possibly be sold to local utilities,” he said.
In other parts of the world, biochar has shown that it can improve soil fertility while helping to reduce the negative impact of chemicals on the environment.