Biochar is charcoal produced for mixing into soil. Charcoal is the carbon-rich material made from heating wood or other plant material in an oxygen-deprived atmosphere. As a soil additive, biochar offers numerous potential benefits. Simply summarized, biochar increases the capacity for soil to hold water and nutrients, enhances crop yields, and captures and stores carbon for the long term.

Biochar is the carbon-rich product obtained by decomposition of biomass in a system with limited air supply. It has a porous structure with high surface area that interacts with minerals, other soil organic matter, and soil biota. Biochar in the soil has been said to be like a “coral reef for microorganisms”, thereby enhancing soil fertility and reducing the CO2 emissions with up to 50%