Iwanthika, G. and Seran, T.H. 2023. Yield Response of Cowpea (Vigna unguiculata L.) to Poultry Waste Application With Different Rates of Potassium and Phosphorus Inorganic Fertilizers. International Journal of Environment. 12, 2 (Dec. 2023), 71–82. DOI:https://doi.org/10.3126/ije.v12i2.65437.