Agrichar is employed commonly as a soil amendment.
Qualities making it suitable:

• It is largely inert. Microbial composting action leaves charcoal largely unaffected.
• It is highly porous, retaining water in the soil or improve drainage, and to provide a large surface area for microbes.
• It is of neutral or alkaline pH, reducing the acidity of (or sweetening) the soil.
• It has very high cation exchange capacity, increasing the uptake of minerals such as Ca, K, Mg and P.
• It is a good insulator, reducing average soil temperatures in hot climates.