Abstract
Field trial was conducted during two successive seasons on 2015 and 2016 in Qalubiya and Kafer El Sheikh Governorates. This study aims to survey of WFT Frankliniella occidentalis (Pergande) infesting flowers of some vegetables flowers, effect of population density of WFT F. occidentalis infesting flowers on some different vegetables and effect of some ecological factors on population density of WFT F. occidentalis infesting flowers of some different of vegetables. The survey showed that thrips F. occidentalis recorded on nine important flowers of vegetables. Eggplant flowers and pepper flowers were the most superior flowers vegetable in high infestation during two successive seasons 2016&2017 at the two locations. The general weekly mean number of the F. occidentaliswas higher abundant at Kafr El Sheikh Governorate than these recorded in Qalubiya Governorate throughout two successive seasons 2016 and 2017 at vegetable crops. Maximum, Minimum temperature and the relative humidity were showed insignificant negative effect during the two successive seasons 2016&2017 at vegetables crops.
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