PT Journal AU Gakige, JK Gachuri, C Butterbach-bahl, K Goopy, JP TI Early vine harvesting of dual-purpose sweet potato (ipomoea batatas) increases feeding quality and total biomass without comprising tuber production SO African journal of food, agriculture, nutrition and development PY 2020 BP 15538 EP 15548 VL 20 IS 2 DI 10.18697/AJFAND.90.18955 LA english ER