Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2014.497.503SepahvandPariya SajediNurali MousaviSeyed Karim GhiasvandMohsen 42014174The effects of nitrogen fertilizer application and different methods for weed control on yield and yield components of corn was evaluated in Khorramabad in 2011. The experiment was conducted as a split plot based on randomized complete block design in 3 replications. Nitrogen application was as main plot in 4 levels (no nitrogen, broadcasting nitrogen, banding nitrogen and sprayed nitrogen) and methods of weed control were in 4 levels (non-control weeds, application Equip herbicide, once hand control of weeds and application Equip herbicide+once time weeding) was as subplots. Result illustrated that effects of nitrogen fertilizer application were significant on grain and forage yield, 100 seeds weight, harvest index, grain number per row and cob weight per plant. Grain yield increased by 91.4 and 3.9% in application banding and broadcasting for nitrogen fertilizer, respectively, compared to the no fertilizer treatment. The results show improved efficiency of nitrogen utilization by banding application. Grain yield, harvest index, seed rows per cob, seeds per row and cob weight were increased by weed control. In the application of Equip herbicide+ hand weeding treatment corn grain yield was increased 126% in comparison to weedy control. It represents of the intense affects of weed competition with corn. The highest corn grain yield (6758 kg h-1) was related to the application banding of nitrogen fertilizer and Equip herbicide+once hand weeding.]]>Anderson R.L., D.L. Tanaka, A.L. Black and E.E. Schweizer,199812531536Blackshaw, R.E., R.N. Brandt, H.H. Janzen and T. Entz,200452406412Blackshaw, R.E. and R.N. Brandt,200856743747Cathcart, R.J., K. Chandler and C.J. Swanton,200452291296Chaab, A.N., G.A. Fathi, S.A. Siadat, E. Zand and Z. Anafjeh,2009Zea mays L.) at different plant densities.]]>7391400Schuster, C.L., D.E. Shoup and K. Al-Khatib,2007Chenopodium album) to glyphosate as affected by growth stage.]]>55147151Ciuberkis, S., S. Bernotas, S. Raudonius and J. Felix,200721213218Dunan, C.M., P. Westra and F.D. Moor III,199912499105Ferrell, J.A., B.A. Sellers, G.E. MacDonald and W.N. Kline,200923531534Harbur, M.M. and M.D.K. Owen,200452845853Ghezeli, F.A.D. and M.A.B. Meybodi,20102010pp: 205208Harzler, R.G., B.A. Battles and D. Nordby,2004Amaranthus rudis) emergence date on growth and fecundity in soybean.]]>52242245Ellis, J.M., J.L. Griffin, S.D. Linscombe and E.P. Webster,2003Oryza sativa) and corn (Zea mays) response to simulated drift of glyphosate and glufosinate.]]>17452460Kamprath, E.J., R.H. Moll and M. Rodrigues,198274955958Lemieux, C., L. Vallee and A. Vanasse,200343323332Lorzadeh, S., M.R. Enayat Gholizadeh and A. Chaab,2010Zea mays Cv. S. C 704).]]>2318Mennan, H., M. Ngouajio, D. Isik and E. Kaya,2006Corylus avellana L.).]]>56335341Poneleit, C.G., D.B. Egli, P.L. Cornelius and D.A. Reicosky,198020766770Radosevich, S., J. Holt and C. Ghersa,19971997Rajcan, I. and C.J. Swanton,200171139150Sadeghi, H. and J. Bohrani,20013111Tamado, T. and P. Milberg,2000Parthenium hysterophorus L.]]>40507521Tetio-Kagho, F. and F.P. Gardner,198880935940Zimdahl, R.L.,1988pp: 145-155pp: 145-155