دراسة تركيب المجتمع الحشري للسونة Eurygaster integriceps Put. و تغيراته خلال مراحل نمو نبات القمح في شمال غربي سورية

Abstract EN

The study was conducted in Northwestern Syria during the 1988/89 and 1989/90 seasons.

The objective was to determine the age distribution of the Sunn pest (Eurygaster integriceps Put.) population, in relation to the different phenological stages of the wheat plant, and the damage caused by it.

This study also showed the effect of some environmental and physical factors on the development rates of both wheat and pest, which resulted in different degrees of synchronization between the pest's instars and the sensitive phenological stages of the wheat plant durimg the two seasons.

These differences showed that the damage of the Sunn pest population on wheat is determined not only by the density of the pest population but also by the synchronization between the sensitive stages of the wheat plant and the presence of the old instars of the pest that feeds aggressively on the wheat plant.