Influence of age of seedlings and spacings on seed yield and quality under SRI (system of Rice Intensification) method of cultivation in ES-18 short duration variety during rabi season at Agricultural Research Station Gangavati, Karnataka during 2004-05 was studied. The 12 days seedlings produced more number of tillers and productive tillers per plant at harvest compared to 8, 16 and 25 days old seedlings.  Wider spacing of 40 x 40 cm was found to have significant influence on growth and quality parameters. The younger seedlings (8 days-old) flowered early and 12 days seedlings recorded higher seed yield per ha (3.25 t). The treatment combination of 12 days old seedling with wider spacing recorded maximum seed yield per ha and seed quality parameters.