BASSAM LAWAN ABDULRAHMAN; BASIRU LABARAN JAZULI; ADNAN AMINU ADNAN. Soil Fertility Improvement, Heavy Metal Safety and Carbon Benefits of Green Charcoal Briquettes in Maize and Cucumber Production. African Journal of Agricultural Science and Food Research, Nigeria, v. 21, n. 1, p. 208–219, 2026. DOI: 10.62154/ajasfr.2025.021.01023. Disponível em: https://afropolitanjournals.com/index.php/ajasfr/article/view/1296.. Acesso em: 27 oct. 2026.