Biological And Ecological Studies On The American Bollworm Heliothis Spp

The aim of the present study was to throw some light on the behaviour of this insect in the autumn an whether it undergoes diapause oe not the biological aspects of diapause and the factors that may affect inoidence of diapause were also considered this work was carried out at fayoum governorate and at plant protection research institute from 1975 until 1979.