The Economic Times

In 2018, scientists added up to 15 tons of cacao-shell biochar per hectare to degraded tropical soil; maize yields improved over several growing seasons

Research indicates that using cacao-shell waste to create biochar has significantly improved agricultural yields on degraded farmland in Sumatra. Over time, this biochar technique demonstrated enhanced effectiveness, particularly in the acidic Ultisol soil. However, its benefits diminished after multiple growing seasons, necessitating repeated applications to sustain its positive influence. Thus, biochar emerges as a beneficial resource for promoting soil health and ensuring food security.