Abstract Field experiments were carried out at the experimental farm of the Faculty of Agriculture, Sohag, South Valley University during two successive seasons, 2002 and 2003, to study the relative susceptibility of some maize and sorghum varieties to infestation by greater sugar cane borers, Sesamia cretica L., and the effect of chemical insecticide (methomyl), microbial insecticide (B.t.) i.e. Agrein, petroleum ...
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