Effect of spacing and fertilizer dose on grain yield of rice (Oryza sativa L.) in rice-rice cropping sequence

The effect of optimum row spacing and fertilizer dose on grain yield of rice was studied skipping 1 row after every 3 rows at 15 cm x 15 cm spacing resulted in highest grain yield of 4.51 t ha-1 during the wet season and 5.27 t ha-1 during the dry. Most profitable rate of fertilizer application was worked out as 132, 66 and 66 kg N, P2O5 and K2O ha-1 in the dry season while 58, 29 and 29 kg N, P2O5 andK2O ha-1 in the wet season under ricerice cropping sequence.