Effect of NPK (20:10:10) Fertilizer Rates and Age of Harvest on Forage Yield and Quality of two Maize (Zea mays L) Varieties in Northern Guinea Savannah. NJAP [Internet]. 2026 Aug. 25 [cited 2026 Oct. 15];53(2):1-10. Available from: https://njap.org.ng/index.php/njap/article/view/9191