الفهرس 
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Abstract
The present study was conducted at the Experimental Farm of Sakha Research Station, Kafr El-Sheikh Governorate during the two successive seasons, 2013/2014 and 2014/2015. Population fluctuation of Aphis craccivora Koch (nymphs and adults) , Empoasca spp.(nymphs and adults) and Liriomyza congesta Becker (larvae) and their associated insect predators (Coccinella undecimpunctata Linnaeus, chrysoperla carnea Stephens, Orius spp., Scymnus spp. and Paederus alferii Koch) were studied at the early and late plantation during the two successive seasons. Results showed that, the early plantation was most infested with Aphis craccivora during 2013/2014 and 2014/2015 seasons. The total number of Empoasca spp. in the second plantation was higher than the first one during the two seasons. The highest infestation with Liriomyza congesta (larvae) was recorded on the early plantation. The late plantation received least number of insect pests compared with the early plantation. Relative susceptibility for certain faba bean varieties to the considered insect pests was tested at the two sowing dates during the two seasons. Results indicated that, Sakha 3 and Sakha 1 varieties were the most infested than the other tested varieties (Giza 843, Masr 1 and Sakha 4) in the first and the second season. Aphox and Biovar exhibited a high efficiency against L. congesta larvae.