Temporary rise in groundwater level and flooding period experiments were carried out to examine excess moisture injury in pot-cultured carrot. Thickened roots showed rotting and suppressed thickening in the low parts when groundwater level was kept at 15 cm for 14 days but thickened roots showed no damage at a groundwater level of 20 cm. Flooding for three days did not cause rotting of thickened roots but flooding for five days or longer caused thickened the roots to rot.
