The effect of row arrangement, time of tiller separation and number of tillers kept hill-1 was studied on the yield of transplant aman rice (cv. BR23). The highest number of total tillers hill-1, effective tillers hill-1 and harvest index were found in single row. The highest harvest index was found in single row. The highest grain yield was obtained in double row arrangement. Plant height and panicle length were higher when the tillers were separated at 25 DAT but number of total tillers hill-1 was maximum when the tillers were separated at 35 DAT. The highest number of effective tillers hill-1, number of grains panicle-1 and grain yield were obtained when 2 tillers were kept hill-1. The highest number of effective tillers hill-1 was obtained when tillers were separated at 35 DAT and 4 tillers kept hill-1 which was similar to tiller separation at 25 DAT keeping 2 tillers hill-1. Growing transplant aman rice in double row arrangements appears as the promising practice. Cultivar BR23 of transplant aman rice appears to be resistant to tiller separation leaving behind only 2 tillers hill-1. Tillers can be separated at 25 or 35 DAT without hampering the grain yield.