@PROCEEDINGS {BADU-APRAKU:2015, title = {Genetic gains in grain yield of extra-early maturing maize cultivars of three breeding eras under multiple stress environments}, author = {Badu-Apraku, B. and Talabi, A. and Fakorede, M. * and Obeng-Antwi, K. * and Yallou, C. * and Haruna, A. *}, booktitle = {Poster presented at the CSSA meeting held 15-18 November, Minneapolis, St Paul, Minnesota, USA}, year = {2015}, month = {November}, address = {Minnesota, USA}, note = {WAHub; CRP Maize; Maize}, }