Three experiments were carried out at Sher-e-Bangla Agricultural University during July, 2000. In experiment I, seeds were drowned in water for 12, 24, 36, 48, 60, 72, 84, 96 and 108 hours and then set in pertridishes to evaluate germination performance. In experiment 2, seeds were soaked in water for 12, 24, 36, 48, 60 and 72 hours and then were sown in soil of polythene bags to evaluate seedling emergence. In experiment 3, seeds were sown in soils of earthen pots and then the pots along with soil were drowned in water for 12, 24, 36 and 48 hours. The results showed that water logging over 24 hours delayed germination significantly. Water logging over 48 hours reduced the germination significantly and that over 60 hours reduced germination drastically. Water logging over 72 hours caused failure in germination. Water logging over 12 hours delayed seedling emergence significantly. But, water logging up to 48 hours significantly improved the emergence percentage of seedlings and that over 48 hours caused drastic reduction in seedling emergence. In experiment 3, it was seen that significantly lower values of almost all the physiological parameters were found with successive increase in duration of water logging over 12 hours.