Effect of green manures and different levels of nitrogen on the yield and yield components of transplant aman rice

Pramanik, M.Y.A.; Sarkar, M.A.R.; Islam, M.A.; Samad, M.A.

Journal of Agronomy 3(2): 122-125

2004


Accession: 004122286

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Abstract
An experiment was conducted in Bangladesh from May to November 1998 to study the effect of green manures and different levels of N on the yield and yield components of transplanted aman rice (cv. BRRI Dhan32). The treatment comprised of 3 green manuring crops, namely Sesbania rostrata, S. aculeata and Crotalaria juncea and N at 0, 20, 40, 60 and 80 kg/ha. S. rostrata produced the highest grain yield of transplanted aman rice compared to the other green manuring crops. The highest grain yield was obtained when the crop was supplemented with 40 kg N/ha combined with S. rostrata. S. aculeata exhibited similar behaviour as that of S. rostrata but C. juncea showed lower performance for yield and yield components of transplanted aman rice. S. rostrata also showed the best performance in respect of plant height, total number of tillers hill-1, number of effective tillers hill-1, number of grains panicle-1, weight of 1000 grains and straw yield compared to the other green manures.