EFFICIENCY OF Coccinella undecimpunctata L.And Chrysoperla carnea (STEPHENS) As BIOLOGICAL CONTROL AGAINST Myzus persicae (SULZER) INFESTING TOMATO PLANTS

The obtained relsults showed that, the reduction percentages of Myzus persicae population by releasing the two predators Coccinella. undecimpunctata and Chrysoperla carnea (Stephens )on tomato plants during the two successive seasons, 2010 and 2011 , Obtained data confirmed that predators releasing caused reduction percentages on M. persicae population compared with control during two successive seasons The suppression of M. persicae population by three treatments of predators released (C. undecimpunctata and C. carnea), C. carnea and C. undecimpunctata on tomato plants were (86.0; 82.8; 80.2 and 84.5; 73.0; 77.6%) on 5th days after releasing with three treated for the first season, 2010 and second season 2011, respectively. Then after two weeks from predators released, the reduction percentage reach its maximum (91.2, 86.0 and 89.7 %) and (91.3, 79.7% and 86.5%) for three treated during the two seasons respectively. Generally in all cases the number of aphid insects had been destroyed did not differ between three different treatments, were not significant.