Here is another fantastic article from Hans-Peter Schmidt’s Ithaka Journal:
Hans-Peter makes a great case for first using biochar in at least one other way before putting it in the ground for agricultural use:
“Biochar is much too valuable for it to be just worked into the soil without having it used at least once for more beneficial purposes – whether as storage for volatile nutrients, as an adsorber in functional clothing, as insulation in the building industry, as energy storage in batteries, as a filter in a sewage plant, as a silage agent or as a feed supplement. Such uses can be followed by use in a farmer’s slurry pit or in a sewage plant, before being composted. It should only be worked into the soil at the end of this “cascade”, helping to create Terra Preta.”
This piece is filled with ideas for entrepreneurs! Since we believe biochar is most valuable and beneficial when used in an agricultural setting, keeping biochar in a closed loop cycle on the farm (or a number of nearby farms) may be the highest and best approach. If first used as a feed or bedding supplement for chickens or cows, or in a farmer’s slurry pit, then composting the resultant material and manure, biochar becomes inoculated with nutrients as part of an integrated system—reducing these costs.