Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2001.1451.1455Amal W. Amin Fatma K. Sherif 122001412Aerobically digested sewage sludge was applied to corn at different rates (0, 10, 20, 30, and 40 ton/fed.). At maturity, number of ears per plant, ear length, ear weight, cob weight, number and weight of kernels per ear, kernel index, kernel yield per plant, volume of 100 kernels, and kernel density were recorded. Corn grains were analyzed for Pb, Cd, Ni, and Cr content. Increasing sludge rates increased significantly the initial growth, cob weight, total chlorophyll, chlorophyll-a in leaves, lead and nickel in kernels. No significant differences were observed for other characters. The concentrations of Pb, Cd, Ni, and Cr in corn grain due to sludge application were generally higher than the normal concentration values. ]]>Alleman, M. and J. Doctor, 200043147161Alloway, B.J.,19952nd Edn.,Amano, E. and H.H. Smith, 19652344351Amin, A.W.,200129131140Berti, M.R. and L.W. Jacobs,19962510251032Das, P., S. Samantaray and G.R. Rout,1997982936Dowdy, R.H., J.J. Latterell, T.D. Hinesly, R.B. Gross man and D.L. Sullivan, 199120119123El-Bagouri, I.H.,19991999FAO,19803849100FAO, 2000Hall, G. and H. El-Hakeh,19991999pp: 313323Kharkwal, M.C. and H.B. Chaudhary,199757415423Labrecque, M., T.I. Teodorescu and S. Daigle,1995Salix species.]]>171303316Mackinney, G.,1941104315322Narwal, R.P., Y.P. Mahendra Singh and M. Singh,1991Zea mays L.).]]>3162168Page, A.L., R.H. Miller and D.R. Keeney,19822nd Edn.,Pages: 1159Pages: 1159Petruzzelli, G., 198927493503Rank, J. and M.H. Nielsen,1998Allium cepa anaphase-telophase chromosome aberration assay.]]>418113119Rappaport, B.D., D.C. Martens, R.B. Reneau and T.W. Simpson, 1988162933Rasmy, N.M.H., 19961996pp: 117136Richards, B.K., T.S. Steenhuis, J.H. Peverly and M.B. Mcbride,199899365377Risser, J.A. and D.E. Barker, 19903rd Edn.,pp: 275-298pp: 275-298Sherif, F.K., S.M. El-Arabi, M.N. Felaefel and I.M. Ghoneim, 2000Solunum tuberosum L.). ]]>516311647Sloan, J.J., R.H. Dowdy and M.S. Dolan, 19982713121317