Abdullahi, Aliyu. “Optimizing Okra (Abelmoschus Esculentus) Productivity through Integrated Nutrient Management: Effects of NPK Fertilizer and Cow Dung Manure in the Sudan Savanna, Nigeria”. IV. International Congress of the Turkish Journal of Agriculture - Food Science and Technology, Niğde, Türkiye (Mayıs 29, 2025): 785–790. Erişim Nisan 17, 2026. https://turjaf.com/index.php/TURSTEP/article/view/553.