Effect of periodic vine pruning on the carotenoid profile of Umuspo 3 orange-fleshed sweet potato variety - Emetole, J.M.; Ojimelukwe, P.C.; Omodamiro, R.M.; Ukom, A.N.; Iheomamere, N.O.; Onuigbo, E.O.; Alamu, Emmanuel Oladeji (Nigerian Institute of Food Science and Technology, 2017)