الفهرس 
I – INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
The experimental farm of the Faculty of Agricultural, Cairo
University was chosen for the field studies of the present work.
This farm is about 195 acres and lies in the Giza Governorate,
Egypt, very close to our Faculty. The flora of the survey area
consisted of about 65 cultivated and wild species belonging to 27
plant families.
The general climate of this district is similar to that in most regions
of the Nile Valley in Egypt where the weather is commonly mild.
The relationships between climatic conditions and the Cicadellid
populations abundance and its associated predators were analyzed.
A) Survey of the Cicadellids and their associated predators
A survey was carried out over a period of three years extending
from December 2008 to August 2011. Samples of several species
of Cicadellids and associated predators were collected from
different crops starting from seedling to harvesting over two week
intervals.
The examined winter crops were faba bean, wheat and clover,
while summer crops were cotton and maize.
The most common species on beans was Empoasca decipiens
followed by Balclutha hebe, while Exitianus taeniaticeps was
found to be the least abundant one. Cicadulina chinai and
Macrosteles sexnotatus were not collected from faba bean crop.
E. decipiens started to colonize faba bean in December at the
seedling growth stage and then gradually increased in numbers