M. A., Y., Hassan, G.A.E., M. M., A. and Hadad, M. 2016. Effect of Organic Fertilizer application rate and Azospirillum brasilense inoculum level on growth and growth components of sweetpotato (Ipomoea batatas L). IJRDO-Journal of Agriculture and Research (ISSN: 2455-7668). 2, 4 (Apr. 2016), 52-62. DOI:https://doi.org/10.53555/ar.v2i4.40.