Manson, O. O. ., O. M. . Aigbe, and O. I. O. “Poultry Manure and NPK 15 15 15 Fertilizer Application and Their Residual Effect on White Yam (Dioscorearotundata) Storage in the Forest Derived Savanna Ecological Zones of Edo State, Nigeria”. Canadian Journal of Agriculture and Crops, vol. 4, no. 1, Sept. 2019, pp. 26-32, doi:10.20448/803.4.1.26.32.