تأثير مساحيق بعض النباتات على خنفساء الحبوب الشعرية (الخابرا)‎ (Dermestidae : Coleoptera)‎ Trogoderma granarium Everts

Abstract EN

The effectiveness of Cascuta chinensis, Orobanche aegyptiaca, Nerium oleander, Ricinus communis and Melia azedarach powders at 0.3, 0.6 and 0.9% concentrations (w:w) with wheat grains was evaluated against Trogoderma granarium.

The insect did not produce progeny when reared on the grain mixed with Ricinus leaves powder, whereas it produced 22.9, 32.44, 36.33 and 40.21 individuals, when reared on wheat grains mixed with Cuscuta, Orobanche, Nerium and Ricinus powders, respectively.

The effect of these plant powders on the generation period was significant and the longest generation period was 53.74 days on the wheat grains mixed with Cascuta powder, as compared to 40.18 days for the control.

The plant powders had significant effect on the larval and pupal developing stages, whereas the plant powder concentration used had no significant effect.

Results showed that the larvae prefered the grain mixed with Cascuta powder more than other plant powders and the adults prefered untreated grain as well as the grains treated with Nerium leaves powder especially for egg laying as compared to other plant powders