Chemical Control of Grape Phylloxera Daktulospharia (Viteus) vitifoliae Fitch. (Homoptera: Phylloxeridae) Using Three Chemical Soil Treatments

Population trends of grape root phylloxera were carried out in highly infested field in Husban, Madaba district in 2005. Mean numbers of eggs and mobile stages, showed a peak in early July. Eggs started to appear in late May, and Nymphs started to appear in late June. Numbers of all stages started to decrease in early August .Galls were noticed on examined roots in 2005 as compared with the 2004 season. There were significant differences among...