Makoi, J. H., & Ndakidemi, P. A. (2010). Effect of plant densities and cropping systems on yield components of cowpea (<i>Vigna unguiculata</i> L. Walp.) genotypes and sorghum (<i>Sorghum bicolor </i>L. Moench.). Journal of Tropical Agriculture, 48(2), 28–33. Retrieved from https://jtropag.kau.in/index.php/ojs2/article/view/219