Rice is an important staple food crop of the world. Aerobic rice system is a new way of growing rice that needs less water than low land rice. It is grown like an upland crop (maize, wheat, Oats etc.) in soil, which is un-puddled, non-flooded or saturated. On the basis of this fact an experiment was conducted during kharif season of 2013 and 2014 at Rice Research Station, Bankura, West Bengal, India. | Grain yield of hybrid rice varieties as influenced by seed rates under aerobic direct seeded situation