IREN, Otobong B.; UWAH, Ime D.; UMANAH, Mmadara I. Response of <I>Amaranthus cruentus</I> to biochar combined with urea fertilizer in Calabar, Nigeria. Journal Of Agriculture, Forestry & Environment , [S. l.], v. 3, n. 1, p. 192–203, 2018. Disponível em: https://jafe.net.ng/index.php/home/article/view/31. Acesso em: 19 apr. 2025.