Short-Term Waterlogging Depresses Early Growth of Sunflower (Helianthus annuus L.) on Saline Soils with a Shallow Water Table in the Coastal Zone of Bangladesh

Sunflower (Helianthus annuus L.), which is widely grown globally for its high-quality edible oil, reasonably salt and drought tolerant but it susceptible to waterlogging. In the saline coastal zone of Ganges delta, sunflower often exposed sudden heavy rainfall during early growth plant tolerance such events not known. Hence, we evaluated effect short-term soil inundation (referred as waterlogging) 0, 24, 48 72 h on at emergence, 2-leaf, 4-leaf stages in early- late-sown crops under field conditions (saline, clay-textured soil, shallow groundwater). Waterlogging 24 did affect any stage waterlogging suppressed emergence 2 stages. completely prevented sowing, whereas was less affected later sowing. Shoot root dry weight were most 2-leaf stage, stage. conclusion, caused by more than up severely depressed growth, indicating need effective drainage sowing low-lying Bangladesh.