@ARTICLE {BADU-APRAKU:2010, title = {The pattern of grain yield response of normal and quality protein maize cultivars in stress and nonstress environments}, author = {Badu-Apraku, B. and Fontem Lum, A. *}, journal = {Agronomy Journal}, year = {2010}, volume = {102}, number = {2}, pages = {381--394}, issn = {0002-1962}, }