Biochar
Biochar is a carbon-rich material that is produced through a process called pyrolysis, a thermal decomposition of materials like wood and plant residue in the absence of oxygen. Biochar can be used as a soil amendment and can aid soil in nutrient retention, water retention, sequestering atmospheric carbon.
Biochar kilns can be a great forest management tool, as we can turn wood from diseased trees and excess brush into a useful soil amendment.