Asian Journal of Plant Sciences1682-39741812-5697Asian Network for Scientific Information10.3923/ajps.2004.429.432Zea mays L.) Hybrids]]>SenerOkan Huseyin Gozubenli Omer Konuskan Mehmet Kilinc 4200434Maize hybrids react differently to various plant density and intra-row spacing. A two-year study was conducted at Mustafa Kemal University, Agricultural Faculty, Research Farm to determine the optimum intra-row spacing for maize hybrids commercially grown in Eastern Mediterranean Region during 2000 and 2001 growing seasons. The experimental design was a Randomized Complete Block in a split-plot arrangement with three replications. Main plots were maize hybrids of Dracma, Pioneer 3223, Pioneer 3335, Dekalb 711 and Dekalb 626. Split-plots were intra-row spacing of 10.0, 12.5, 15.0, 17.5 and 20.0 cm. Split-plot size was 2.8 by 5.0 m with four rows per plot. The effects of intra-row spacings on the grain yield and some agronomic characteristics were statistically significant. Hybrid x intra-row spacing interaction effects were significant only at ear length and grain yield. The highest grain yields were obtained from Pioneer 3223 and Dracma at 15.0 cm intra-row spacing (11718 and 11180 kg ha-1, respectively).]]>Tollenaar, M.,19892913651371Nafziger, E.,199475962Tollenaar, M.,199131119124Widdicombe, W.D. and K.D. Thelen,20029410201023Porter, P.M., D.R. Hicks, W.E. Lueschen, J.H. Ford, D.D. Warnes and T.R. Hoverstad,199710293300Larson, E.J. and M.D. Clegg,199912400405Farnham, D.,20019310491053Gozubenli, H., A.C. Ulger and O. Sener,2001163948Thiraporn, R., G. Geisler and P. Stamp,1983152460468Gokmen, S., O. Sencar and M.A. Sakin,2001Zea mays everta) to nitrogen rates and plant densities.]]>251523Ulger, A.C.,19981395104Rogers, I.S. and G.J. Lomman,198828787792Norwood, C.A.,200193540547Olson, R.A. and D.H. Sander,19883rd Edn.,pp: 639-686pp: 639-686Tollenaar, M., D.E. McCullough and L.M. Dwyer,19941994pp: 183-236pp: 183-236Ulger, A.C.,1986Konuskan, O.,20002000Duncan, W.G.,1975pp: 23-50pp: 23-50