Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2007.250.254KulsumM.U. BaqueM.A. KarimM.A. 22007102This study was conducted to evaluate the performance of blackgram (Vigna mungo L) under various levels of nitrogen at the Agronomy Research Site of Bangabandhu Sheikh Mujibur Rahman Agricultural University during March to June 2002. Two varieties of blackgram- BARI mash 3 and BINA mash 1 and six levels of nitrogen viz. 0, 20, 40, 60, 80 and 100 kg N ha-1 were the treatment variables. The experiment was laid out in a RCB Design with three replications. A best-fit positive linear relationship existed between leaf chlorophyll and leaf nitrogen content with different nitrogen levels. Unexpectedly the N, P and K accumulation in the two varieties was not affected significantly. However, there was an increasing tendency of total uptake of these elements in both the varieties. N, P and K uptake increased up to 60 kg N ha-1 then decreased with the increasing nitrogen levels. Among the varieties BARI mash 3 showed better performance than BINA mash 1 for most of the parameters.]]>BBS,20002000Bahl, G.S., N.S. Pasricha and V. Beri,1996Pisum sativum L.).]]>322431Dakora, F.D. and S.O. Keya,199729809817Ferdous, A.K.M.,20012001Ghildiyal, M.C. and G.S. Sirohi,198624124126Gomez, K.A. and A.A. Gomez,19842nd Edn.,Pages: 704Pages: 704Greenwood, E.A.N.,197628135Hardarson, G. and C. Atkins,20032524154Hamid, A.,199113339Hitachi, L.,19861986Lawn, R.J. and W.A. Brun,1974142225Lindner, R.C.,1944197689Mitra, R., S.E. Pawar and C.R. Bhatia,19881988pp: 244251Mitra, S. and M.C. Ghildiyal,1988160303308Negi, S.C.,1992Pisum sativum).]]>37772774Quayum, M.A., A.F.M. Maniruzzaman and M.S. Islam,1994Oryza sativa).]]>64824828Rao, T.R.K. and M.C. Ghildiyal,1985Vigna radiata (L.) Wilczek).]]>28135144Sing, T., K.N. Singh and K.L. Vaid,1992Pisum sativum) to nitrogen and phosphorus fertilization under rainfed condition in Kashmir Velley.]]>37619620Tanaka, A., J. Yamaguchi, S. Miura and H. Tamaru,198430199208Vitousek, P.M., J.D. Aber, R.W. Howarth, G.E. Likens and P.A. Matson et al.,19977737750Verma, M.L., A.R. Bhandari and J.N. Raina,1998Pisum sativum L.).]]>15195198Verma, M.L. and A.R. Bhandari,1998115565Yamakawa, T.,19921992