Manure coating improves biochar's fertiliser qualities
Biochar is a carbon-rich, charcoal-like substance made from oxygen-deprived plants or other organic material. It can store large amounts of carbon and when applied as a fertilizer it slowly releases nutrients into the ground. However, the exact mechanisms how biochar stores nutrients and promotes plant growth have not been identified yet, which also severely limits its commercial potential. An international team of researchers, led by the University of Tübingen in Germany, deciphered the storage and release mechanisms of biochar.