Mornya, P. M. P., and A. . Mansaray. “Growth and Yield Response of Okra to Method and Time of Poultry Manure Application under Rain-Fed Conditions: Okra Production Using Poultry Manure in Sierra Leone”. RENEWABLE, vol. 2, no. 1, Oct. 2022, pp. 51-60, https://journals.ui.edu.ng/index.php/ren/article/view/749.