Effects of cowpea live cover densities on foxtail and salsify control and maize yield

-2 of cowpea live cover density, respectively. The lowest weeds biomass and the highest maize grain yield, as compared to the weedy check, were obtained when cowpea growth was terminated 90 and 75 days after maize planting, respectively. Optimum density of cowpea live cover to guarantee maximum maize grain yield and optimum suppression of weeds were 22 plants m -2 when cowpea growth was terminated 75 days after maize planting.