Dr. Fayhaa Abbood Mahdi Al-Nadawi and Dr. Maan Abdul Azeez Shafeeq Al-Salihi* Iraq
الملخص العربي
ABSTRACT
This study was conducted at the Faculty of Agriculture / University of
Baghdad fields, during the period from June until October 2014. The
present study aimed to study the life tables of whitefly S. phillyreae,
where the density is high in March. To find out the main death factors
that play a key role in the population dynamics of this pest, the results
of the life tables showed that the mortality rate due to lack of fertile
eggs, sex ratio and photoperiodism synchronization, which plays an
important role in the fluctuation of high density the pest.The biotic
factors limited impact on the immature stages. In spite of this, the
importance of these biotic and abiotic factors in regulating the density of the population
below the critical limit the economic level with continued high values of the tendency in the
direction of the highest levels of up to 1.9-1.21 on citrus trees. The results of the life tables of
the age group that the factors responsible in reducing the high number of insects, especially
the photoperiodism synchronization and the death of the adult. And the guide tendency this
pest during the period from June to October 2014, were 1.09, 11.21, 0.62, 0.89 and 1.21 in
Baghdad governorate respectively. Therefore, it has become important to introduce natural
enemies of insect native citizen of utmost necessity for integrated pest management and
reduce the spread of pest to high levels.
د فيحاء عبود مهدي النداوي | Dr.FAYHAA ABBOOD MAHDI AL-NADAWI | 8927