Kemal, Yenus Osman, and Merkuz Abera. 2015. “Contribution of Integrated Nutrient Management Practices for Sustainable Crop Productivity, Nutrient Uptake and Soil Nutrient Status in Maize Based Cropping Systems”. Journal of Nutrients 2 (1):1-10. https://doi.org/10.18488/journal.87/2015.2.1/87.1.1.10.