Working Document Series Open Access Evaluation of exotic cowpea genotypes for grain yields in autumn, winter and summer seasons Ahmed Osman Abunearan Medani Cowpea (Vigna unguiculata) as leguminous crop was being needed by the people to supplement their diet in form of protein. Our local cultivars did not provide the continuous yields throughout the year; therefore the current research is requ… RUF-33973 2014 CC BY 4.0 12 Aug 2015
