Researchers at the University of Cape Coast in Ghana tested biochar made from oil palm empty fruit bunches alongside compost blended with poultry manure on degraded tropical soil. In a 30 day incubation, the combined amendments raised microbial biomass carbon eightfold and boosted bacterial and fungal counts well above the unamended control. The authors argue the biochar provides a stable carbon skeleton while the compost supplies nutrients, and both can be produced from local waste streams. The study is limited to pots, not field plots, and the next steps are crop trials and microbial community analysis. Still, it points to a low cost recipe for restoring weathered Acrisols in West Africa while keeping carbon in the soil. For anyone tracking soil carbon, biochar adoption, or circular agriculture, it is worth a read.
