Evaluation of bioactivity of Citrullus colocynthis seed oil against some Agricultural pests

Abstract

AbstractStudies were conducted to evaluate the biological activity of seed oil extract of C. colocynthis at rate of 10 , 15 , 20 % against Tetranychus urticae ( Koch ) , Bemisia tabaci and Myzus persicae Suiz. Result showed that all concentrations were effectiveness in controlling Tetranychus urticae , Bemisia tabaci and Myzus persicae in the laboratory . Mortality percents were 30 , 100 , 100 and 62.5 , 71.2 , 89.5 and 91 , 93.4 , 100 % for the pests at three rates respectively . Field studies indicated that the rate 15 % was effectiveness in controlling T. urticae with mortality of 99.7 % after three days of application . The realability of using the extract in the management practices against the intended pests was discussed.