%0 Journal Article %T Factors influencing the adoption of improved cowpea varieties in the Sudan Savannas of Northern Nigeria %A Amadu Y. Kamara %A Joseph James Mbavai %A Muhammad Bello Shitu %A Oyakhilimen Oyinbo %A Tahirou Abdoulaye %J - %D 2019 %R 10.5897/JAERD2019.1078 %U https://academicjournals.org/journal/JAERD/article-abstract/7DEE51362301