تأثير الفطر Beauveria bassiana (Balsam)‎ في الأدوار المختلفة لثاقبة الحبوب الصغرى Rhyzoperthadominica (fab)‎ تحت الظروف المختبرية

Abstract EN

The fungus Beauveria bassiana was used as suspension at concentrations 1X106 and 1X108 conidia/ ml on eggs of lesser grain borer Rhyzopertha dominica The highest number of mortality egg in concentration 1X108 conidia / ml 18 eggs after 24 hours from treatment, When treated larvae at the first phase the number of preponed larvae at concentrations 1X106 and 1X108 conidia / ml was equal , amounting to 11 larvae after 48 hours from treatment compared with control treatment, which amounted to zero, The treatment of larva at four phase with suspension fungus Beauveria bassianain concentrations amounted of the highest number of larvae mortality was 14 larvae in concentration1X106 conidia / ml after 72 hours from treatment while concentration 1X108 conidia / ml was amounted 10 larva after 24 hours from treatment compared to the control treatment, which amounted to zero.The highest number of mortality pupas for lesser grain borer Rhyzopertha dominica was 8.1pupas in concentrations 1X108 conidia / ml after 48 hours of treatment, compared with 6 pupas in concentration 1X106 conidia / ml after 48 hours of treatment while the control treatment amounted 0.9 pupa.

however when the treatment of adults lesser grain borer Rhyzopertha dominica in concentrations 1X106 and conidia / mL, we find that the number of adult mortality was 15 adult insect after treated with fungus by 48 hours the average number was 10 pupas in concentration 1X108 conidia / ml and 9.66 conidia / ml pupas concentration 1X106 conidia / ml compared to the control treatment when reached 0.33 pupa.