Asian Journal of Plant Sciences1682-39741812-5697Asian Network for Scientific Information10.3923/ajps.2005.220.224Zea mays
L.) Growing Areas in Turkey]]>Nedim DoganM. Ozhan Boz 3200543Survey studies were carried out in 2003 and 2004 growing seasons in Aydin province of Turkey to compare the weed problems in main and second crop maize growing areas and to evaluate the influence of sowing period on the frequency and density of weeds. In total 150 fields sown as main crop at three different periods (fields sown between 15-30 April; 01-07 May and 10-15 May) and 98 fields sown as second crop at three different sowing periods after wheat harvest (fields sown between 17-20 June; 24-27 June and 01-07 July) were monitored to assess the frequency and density (number of individuals per m-2) of weed species in both years. As the result of the studies in total 25 weed species were found in maize growing areas, of which 12 had a frequency of >25%. Although similar species were observed in both main and second crop maize fields in the region, frequency and density of some weeds, as well as the density of total weeds, were markedly lower in second crop maize growing areas. Results also showed that late sowing periods in main crop maize generally resulted in lower weed density, whereas no influence of sowing period on the frequency and density of weeds was observed in second crop maize fields.]]>Dogan, M.N., A. Unay, O. Boz and F. Albay,2004Zea mays L.).]]>28349354Kudsk, P. and J.C. Streibig,20034390102Singer, J.W., W.J. Cox, R.R. Hahn and E.J. Shields,200092754760Cuomo, G.J., D.D. Redfearn and D.C. Blouin,1998909396Boz, O.,200031016Kilung, K., P. Kwangho, K. Ku and K.H. Park,1997178093Wu, H., J. Pratley, D. Lemerle and T. Haig,199939171180Boz, O., 20032772778Perkins, J.H. and B.R. Patterson,19971997pp: 13-35pp: 13-35Uremis, I., A.C. Ulger, O. Gonen, B. Cakir, I. Kadioglu and A. Uludag,19971997pp: 427432Torstenson, L.,19961996pp: 267273Barberi, P.,20032003pp: 179-193pp: 179-193Cousens, R. and M. Mortimer,19951995pp: 169-216pp: 169-216Buhler, D.D., R.G. Hartzler, F. Forcella and J.L. Gunsorus,1997pp: 4pp: 4Odum, E.P.,19713rd Edn.,Pages: 574Pages: 574Belz, R. and K. Hurle,20014317320Rubin, B.,1996151732Tesdale, J.R.,20032003pp: 169-178pp: 169-178