Kusse, T. , Balemi, T. and Abera, T. 2019. 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. International Journal of Sustainable Agricultural Research. 6, 4 (Oct. 2019), 183–197. DOI:https://doi.org/10.18488/journal.70.2019.64.183.197.