Abstract
This research was conducted during 2014/2015 and 2015/2016 seasonsin the Agricultural Research Station, King Abdulaziz University at Hada Al-Sham region, Saudi Arabia to produce mungbean as a new legume crop in Saudi Arabia using low water consumption through maximizing crop yield with optimizing irrigation water use efficiency under drought stress during vegetative and flowering growth stages.No significant differences were found between the yield and yield components when practicing water stress during vegetative stage compared with full irrigation treatment in the two seasons. MN96 cv. was significantly dominated over NMf cv. in all studied traits except flowering date.The highest IWUE and seed yield/ha were obtained from the MN96 cv. under full irrigation and water stress during vegetative stage without significantly differences between them in the two seasons.