Document Type : Research Paper
Abstract
The study deals with the ecological studies on three Homoptera insects (aphids, leafhoppers, whitefly) on cucumber plants Cucumis sativus L. It includes the following studies, the occurrence and prevalence of insects on cucumber plants throughout the spring and fall seasons of 2009 and 2010 at two different locations in Diyala governorate. The results obtained showed that Aphid populations at both locations were more dominant during spring than fall seasons of 2009 and 2010, apterous and winged aphids tended to be significantly high in numbers during the first half of any of the two spring seasons at both locations , a negative correlation was found between the aphid population density and mean of temperatures where r2 ranged from 5.43 - 27.25% , on the other side , appositive correlation between aphid population density and mean of relative humidity's was observed r2= 8.50% - 16.42% , leafhopper and whitefly insects infesting cucumber plants was also evaluated throughout of spring and fall seasons of 2009 and 2010 at two locations.
Main Subjects