NON-CUMULATIVE EFFECT OF URTICA PILULIFERA OIL EXTRACT ON THE MORTALITY RATES OF WHITE –FLY IMMATURE STAGES BEMISIA TABACI ON CUCUMBER PLANT IN PLASTIC HOUSE

Abstract

This study conducted in Plant Protection Department College of Agriculture and Forestry Mosul University in 2020 to know the non_cumulative effect of oil extract of Urtica pilulifera on mortality rate of immature stage of White-fly Bemisia tabaci on cucumber plant in plastic house . The results show that the higher rate of mortality in egg was 24.33% at conc.3% after 72 h.of treatment. And the higher rate of mortality of nymph was 46.33% at conc.3% after 72 h. OF treatment.

Keywords

• bemisia tabaci
• urtica pilulifera
• oil extract