The experiment was conducted in paddy variety ADT 39 at Agricultural Research Station, Bhavanisagar, Tamil Nadu Agricultural University to assess the seed yield and quality under SRI method of planting and compared with conventional method. Seeds were fortified with different chemicals like KCl and KNO3 for 12 hr followed by seed incubation for 24 hr before sowing and crop was foliar sprayed with DAP 2% at initial and 50 % flowering stage. The treatments consists of different methods of planting viz., i. SRI method and ii. Conventional method of planting; various seed hardening treatments viz., i. SRI method of planting + Control (No treatment) (T0) ii. SRI method + Seed hardening with KCl (T1) iii. SRI method + Seed hardening with KNO3 (T2) iv. SRI method + Seed hardening with KCl+ DAP 2% spray (T3), v. SRI method + Seed hardening with KNO3 + DAP 2% spray (T4) vi. Conventional method + Control (No treatment) (T5) vii. Conventional method + Seed hardening with KCl (T6) viii. Conventional method + Seed hardening with KNO3 (T7) ix. Conventional method + Seed hardening with KCl + DAP 2% spray (T8) x. Conventional method + Seed hardening with KNO3 + DAP 2% spray (T9). Seeds hardened with KCl 1% combined with DAP 2 % foliar spraying at initial and fifty percent flowering stage under SRI method showed superior performance in recording higher number of productive tillers / plant (24), 100 seed weight (13.0 gm), seed yield (3217) germination (97%) and vigour index (3492). Whereas conventional method of planting recorded comparatively lower seed yields (2815), germination (90%) and vigour index (2944).