Umeugokwe , C.P., V.U. Ugwu, O.P. Umeugochukwu, I.M. Uzoh, S.E. Obalum, G. Ddamulira, G.M. Karwani, and G. Alenoma. “Soil Fertility Indices of Tropical Loamy Sand As Influenced by Bambara Groundnut Variety, Plant Spacing and Fertilizer Type”. Agro-Science 20, no. 1 (March 24, 2021): 65–71. Accessed September 6, 2026. https://www.ajol.info/index.php/as/article/view/204977.