The present study was carried out at Sakha Agricultural Research Station (clayey soils) during 2018 and 2019 to find the role of water deficit on yield some relations for sorghum cowpea summer forage crops. Three irrigation levels were executed; 100% (full irrigation), 90% (10% deficit) 80% (20% deficit). Results showed that increasing deficit, markedly led decreasing fresh, dry plant height th...