COOKEY, C., R. Keyagha, O. Umeh, N. Okoli, V. Ogwudire, R. Alagba, C. Echereobia, and E. Nwokeji. “Efficacy of poultry manure and biochar of cassava peels on root-gall nematode (Meloidogyne incognita) of okra (Abelmoschus esculentus) in an endemic Ultisol.: Application of Biochar and Poultry Manure in Nematode-Infested Soils”. International Journal of Agricultural Technology, vol. 21, no. 2, Mar. 2025, pp. 491-06, doi:10.63369/ijat.2025.21.2.491-506.