Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2000.1389.1390AhmadZaheer KisanaN.S. MujahidM.Y. AhmadIftikhar MustafaS.Z. MajidA. 9200039Response of various population densities towards yield was tested in Pajnad-88, Pirsabak-85 and Chakwal-86 under natural rainfed conditions. Harvest index, spike length, number of spikelets/spike, grains/spike tend to decrease significantly with increase in seed rate. Plant height and grain weight was not significantly affected by seed rate. Maximum yield was obtained with seed rate of 60 kg ha1.]]>Bhatti, M.I., G.H. Jamro and S.U. Mangi,199062528Hucl, P. and R.J. Baker,199070917Nayital, S.C. and R.K. Sharma,199036568Parihar, G.N. and R. Singh,1995409798Svoboda, M.,198937111117Sarker, S. and M.G.S. Torofder,199237352354Shrivastava, U.K., R.L. Rajput and N.K. Singh,19941457