“Outcome of phosphorus fertilizer on tuber yields vegetative growth and phosphorus uptake of sweet potato (Ipomoea batatas)” (2014) International Journal of Manures and Fertilizers, 3(1), pp. 558–560. Available at: https://www.ijpp.org/journal/index.php/ijmf/article/view/130 (Accessed: 5 April 2026).