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 [Internet]. 2025 Sep. 5 [cited 2026 Jul. 7];1(2):91-6. Available from: https://journal.agric.nou.edu.ng/agricjournal/index.php/NJARD/article/view/41