Effect of Integrated Application of Poultry Manure and Chemical NP Fertilizers on Growth, Yield and Yield Components of Highland Maize Variety on Vertisol at Ambo University on Station, Ethiopia. ijsar [Internet]. 2019 Oct. 8 [cited 2026 Nov. 2];6(4):183-97. Available from: https://archive.conscientiabeam.com/index.php/70/article/view/282