Salman Nasser. “FERTILIZATION EFFECTS ON OKRA VARIETIES IN SUDAN SAVANNA ECOLOGICAL ZONE OF KEBBI STATE: A COMPARATIVE STUDY OF ORGANIC AND INORGANIC METHODS”. American Journal Of Agriculture And Horticulture Innovations 3, no. 08 (August 7, 2023): 05–09. Accessed July 1, 2025. https://www.theusajournals.com/index.php/ajahi/article/view/1531.