الخلاصة:
The study focuses on the insecticidal activity of leaf extracts Pergularia tomentosa
L. (Asclepediaceae) harvested in Oued Metlili (North East Algerian Sahara) againt Tribolium
castaneum. It concerns their effect on mortality.
Pergularia tomentosa the aqueous extract gave a good result for toxicity on individuals of
Tribolium castaneum, the effective ness is confirmed by the death of the beetle castaneum
adults. The death of all individuals (100%) in a week.
The evaluation of 50 lethal time (LT50) and 90 (TL90) shows that the leaf extract from
Pergularia tomentosa L. shows a particular speed of action againt the imagines of Tribolium
castaneum.
