J.E Onyibe, C.K. Daudu, J.T. Arokoyo, J.G. Akpoko, R.A. Gbadegesin and E.N. lwuafor. Spread of Extra-Early Maize Varieties in the Drier Savanna Ecology of Nigeria. Indian J Ext Edu. 2024;37(3-4):116-124. doi:10.48165/