Phenological Diversity and Yield-Component Variation among Early-Maturing Cowpea (Vigna unguiculata [L.] Walp.) Accessions in the Southern Guinea Savanna of Nigeria
Cowpea (Vigna unguiculata [L.] Walp.) is an important grain legume in sub-Saharan Africa. However, the value of improved germplasm depends on the fit between crop duration, reproductive architecture and the target production environment. This study evaluated 20 early-maturing cowpea accessions at the National Cereals R...