The main effect of genotypes and Zn levels had statistically significant influence on the average Zn concentration and its uptake in straw and grains of all cowpea genotypes. The main and interaction effect of zinc levels had no significant on copper concentration in grains and straw of all cowpea genotypes, whereas the significant increase in copper uptake was observed in grains of all cowpea genotypes with the soil application 2.5 mg Zn kg^-1 soil and conjoint use of 2.5 mg Zn kg^-1 soil and foliar application of zinc over no application of zinc. The main effect of zinc supply regimes showed that soil application of 2.5 mg Zn kg^-1 soil and conjoint use of 2.5 mg Zn kg^-1 soil and foliar application of zinc had no statistically significant effect on average iron concentration in straw and grains while a significant increase in average iron uptake was observed in grains and straw of all cowpea genotypes, the interaction effect of genotypes and zinc supply regimes had statistically significant influence on average iron concentration in grains and straw of all cowpea genotypes. The main effect of soil application of Zn 2.5 mg kg^-1 soil showed a significant increase in manganese concentration in grains of cowpea genotypes, while manganese concentration in grains was reduced with the conjoint use of soil application of Zn 2.5 mg Zn kg^-1 soil and foliar application of Zn.