“Maize Vegetative Growth Response to Poultry Manure and Sowing Date during Delayed onset of Rainfall in a Humid Agroecology of Nigeria” (2021) Global Journal of Science Frontier Research, 21(D1), pp. 13–19. Available at: https://www.journalofscience.org/index.php/GJSFR/article/view/2892 (Accessed: 14 August 2026).