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Influence of Different Organic Manures Used as Soil Amendments on the Yield and Potassium Uptake of Maize (Zea mays L.) at NOUN Research Farm, Rigachikun, Kaduna State, Nigeria. NJARD. 2025;1(2):91-96. Accessed July 7, 2026. https://journal.agric.nou.edu.ng/agricjournal/index.php/NJARD/article/view/41