تأثير بعض مبيدات الحشرات المستخدمة في سورية في طفيل بيض-يرقات عثة ثمار التفاح (Ascogaster quadridentata Wesmael)‎

Abstract EN

The effect of six insecticides to be used on apple trees in Syria were tested on adults of codling moth egg-larvae parasitoid Ascogaster quadridentata Wesmael.

In addition, persistence of tested pesticides on the leaves of apple trees after different spraying intervals was evaluated.

The highest recommended field application rates of the tested insecticides were applied.

The classification 1-4 scale of the International Organization for Biological Control (IOBC) for insecticides effect on the mortality of adults was used.

This study showed that Chlorpyrifos was a harmful insecticide, and classified in the fourth class.

Deltamethrin and Acetamiprid were moderately harmful.

Whereas the insect growth regulator insecticides and the insect growth inhibitors (Fenoxycarb, Diflubenzuron and Lufenuron) were harmless to the adults of the parasitoid, and classified as class 1.

The study on duration of insecticides influence on parasitoid adults indicated that Chlorpyrifos and Deltamethrin were moderately persistent (16-30 days), whereas the pesticide Acetamiprid was slightly persistent (5- 15 days).

This study identified safe pesticides to A.

quadridentata parasitoid and evaluated their persistence for potential use in integrated pest management in apple orchards.