الفهرس 
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Abstract
The present work was carried out at experimental Farm, Fac. of Agric.,
Fayoum Univ. in four successive plantations during 2014/15 and 2015/16 seasons on
cabbage. The sabeny variety was cultivated in the summer plantation and the
japanese variety was cultivated in the winter plantation.
Survey demonstrated that seven insect pest species belong to seven families
and three orders were recorded. Brevicoryne brassicae L. and Thrips tabaci
Lindeman were the most dominant followed by Bemisia tabaci Gennadius, while P
rapae recorded the lowest density. The predominant predators were Episyrphus
balteatus Deg and the lady beetles, Coccinella undecimpunctata L. Also, three
parasitoid species belong to order Hymenoptera were recorded. The most parasitoid
abundant was Diaeretiella rapae M’Intosh associated with aphids.
Effect of intercropping varieties (sabeny and japanese cabbage) infestation
with important insect pests on the two cultivars intercropped in radish and eruca were
studied. The combinations of the experiment included six objects: Sabeny cabbage
only; Sabeny cabbage intercropping with radish; Sabeny cabbage intercropping with
eruca; japanese cabbage only; japanese cabbage intercropping with radish and
japanese cabbage intercropping with eruca. During the period from 1st Jun to 8th
Sep.
The efficiency of some insecticides ( Chlorpyrifos 48% EC, Match 50% EC
and Speedo 5.7% WDG), Soap 0.5% and Biofly at field concentration were
evaluated on cabbage aphid and thrips through out the period from the end of Nov. to
mid of Dec. The results observied that high effect on aphids and thrips populations
that treated by all used materials ,excpt Biofly which appeared limitable effect.