M. Etukudo M, Egbe A. A Study on Germination and Early Seedling Growth of Zea mays L.in Hibiscus sabdariffa Linn. Extract Treated Medium. IJSBAR. 2017;36(8):263-272. Accessed September 11, 2025. https://www.gssrr.org/JournalOfBasicAndApplied/article/view/8551