تأثير المستخلص القلواني الخام لأوراق نبات البمبر Cordia myxa في مكافحة الطور اليرقي الرابع لخنفساء ثاقبة الحبوب الصغرى و تطورها Coleoptera : Bostrichidae)‎ Rhyzopertha dominica (F.)‎

Abstract EN

An experimental study was conducted to evaluate the effect of AL-coholic extract alkaloid of Cordia myxa leafs in fourth larval stage of lesser grain borer Rhyzopertha dominica.

Using alkaline extracts of 8%, the study has been shown clear effect increased in mortality rate for fourth larval stage 93.3% and degressed to 66.6% at 4% concentrate to 13.3% with control treatment .Ahigher percentage of pupal mortality 16.6% at 4% concentrate has been observed, while no natural emergence carried out at concentrates of 4.6% comparing with control treatment of 86.66%, at the same time percentage of deformation has been increased to 16.66% at 4% of extracts and degressed to 6.66% at 6% while no deformation have been shown with control treatment .