Corn borers are considered of the most destructive pests that causing great yield losses in Maize (Zea maiz), Sorghum and Sugarcane. These Lepidopterous borers are among the most economically important crop pests in Egypt. There are different methods were utilized to manage corn borers, Thus the biorational agents are being considered the most important thing to be clarified in this book. Therefore, it will be obvious that the rearing of corn borers for ten successive generations will give good support how to deal with these insects and to determine the biorational Residue in the Corn plants...