Yield and quality of different rice hybrids (Oryza sativa) and aromatic rice varieties grown under saturated and flooded soil conditions

摘要

Performance of seven different rice hybrids (PA6444, NDR-359, CORH-3, KRH-2, Ajay, Goraccknath and TNRH-185) and seven aromatic rice varieties (Pusa Basmathi, GEB 24, Jeeragasambha, Kalanamak, Indrabhog, Bhadshabhog and Mugad Sugandi) under two different soil conditions; saturated soil (0.5 mm of water) and flooded soil (2.5 mm of water) were evaluated in a field experiment conducted during 2008-09 at the research farms of TNAU, Coimbatore, Tamil Nadu. Rice hybrids and aromatic rice varieties recorded higher yield in flooded soil condition. But water use efficiency was higher (35% more) in saturated soil condition. A significant difference in grain yield was observed under puddled aerobic (2610 kg ha~(-1)) when compared with (3471 kg ha~(-1)). NDR-359 rice hybrid recorded taller plants (96.7) and high dry matter production (10308 kg ha~(-1)). Similarly, Mugad sugandhi aromatic rice resulted in higher dry matter production of 10580 kg ha~(-1). Even though low land rice hybrids and aromatice rice varieties, two hybrids, NDR-359 and KRH-2 and one aromatic rice variety, Mugad sugandhi recorded less yield reduction and better water productivity than other varieties in saturated soil condition. However, there were no significant difference in rice quality with two different soil conditions, but interaction effects were found significant.