A field experiment was conducted at the Agronomy Field laboratory, Bangladesh Agricultural University, Mymensingh to study the effect of integrated management of green manures and nitrogen fertilizer on the growth of transplant aman rice (cv.BRRIdhan32).The experiment comprised of three green manures viz., Sesbania rostrata, Sesbania aculeata and Crotalaria juncea and 5 nitrogen (N) levels viz., 0, 20, 40, 60 and 80 kg ha-i. Absolute control and recommended dose of nitrogen (i.e., 80 kg N ha-1) and @ 20 t ha-1 of well-decomposed cow dung were also included. Growth attributes of transplant aman rice such as plant height, leaf area index (LAI), leaf area duration (LAD), dry matter production and grain yield due to green manures in combination with 40 kg N ha-1 were statistically identical to 80 kg N ha-1. On the other hand, cow dung at 20 t ha-1 was comparable with sole green manuies in these parameters . Growth attributes showed higher values with the incorporation of green manures in combination with higher levels of nitrogen. The growth performance of rice due to using of cow dung at 20 t ha-1 varied and it recorded lower values than that of 80 kg N ha-i. Growth attributes of transplant aman rice with green manures S. rostrata and S. aculeata in combination with nitrogen were at par and C. juncea recorded lower values. All green manuring crops in combination with 40 kg N ha' produced the highest grain yield in transplant aman rice.