Nnadi, O. F., Ononuju, C. C., Ikwunagu, E. A., & Orikara, C. C. (2019). The Effect of Air Dried Leaf Powder and Burnt Leaf Ash of Different Plants on Root-knot Nematode (Meloidogyne spp.) on Okra (Abelmoschus esculentus L. Moench). Journal of Experimental Agriculture International, 41(1), 1-8. https://doi.org/10.9734/jeai/2019/v41i130389