كفاءة قشور سنابل القمح و مستخلصاتها في حماية الحبوب المخزونة من الإصابة بخنفساء الخابرا (Trogoderma granarium Everts)‎

الملخص EN

This study was conducted to determine the effectiveness of wheat spike husks and its extracts in protecting wheat seeds from Trogoderma granarium Everts (Coleoptera: Dermestidae) infestation.

Removal of husks lead to increase of infested seeds up to 26% in comparison with 15% of covered ones.

Storage of seeds as spikes, protected from Khapra beetle infestation.

The infestation rate was not more than 7% and continued at this low level for 13 weeks, then increased to its highest level.

Testing the efficacy of the seed extracts on Khapra beetle infestation, showed that treatment of wheat seeds with 40% water extract, reduced the damage from 35% to 26%.

It was found that seed damage rate increased gradually and became significant after four months.

The results obtained from treatment of wheat seeds with spike methanolic extract, depicted significant reduction in seed damage rate in comparison with water extract treatment.

The damage rate was reduced to 1% at concentration of 18% compared to 40% for the control, and such protection continued for more than ten months.

There were no significant differences between the wheat varieties used.