Ukom A, Ojimelukwe P, Okpara D. Nutrient Composition of Selected Sweet Potato [Ipomea batatas (L) Lam] Varieties as Influenced by Different Levels of Nitrogen Fertilizer Application. Pak. J. Nutr. [Internet]. 2009 Oct. 15 [cited 2025 Sep. 4];8(11):1791–1795. Available from: https://pjnonline.org/pjn/article/view/1085