Utilization of El-Oshar Plant Extract As A Novel And Safe Approach In Controlling
The Pumpkin FlyDacus ciliatus Loew And the Peach Fruit Fly
Bactrocera zonata Saunders (Diptera: Tephritidae) in Egypt

• Badr El-Sabah A. Fetoh *, Gehad M. Mousa* and Tahany G. Mohamaden**
• *Plant Protection Research Institute, ARC, Dokki, Giza, Egypt.
• **Central Agricultural Laboratory of Pesticides, ARC, Dokki, Giza, Egypt.
• The Third International Conference onIPM Role in Integrated Crop management and Impacts on Environment and Agricultural Products. 26-29 November 2005, Giza, Egypt.

Abstract

Different concentrations of ethanol El-Oshar (Calotropis procera Ait.) leaf extract were prepared to their insecticidal effects against the Pumpkin Fly, Dacus ciliatus Loew and the Peach Fruit Fly, Bactrocera zonata Saunders (Diptera: Tephritidae). Recorded results showed that, El-Oshar extract was effective on both examined flies. The concentration 2.5 ml/l. has the highest mortality percentages; 98.33% after 24 hours & 100% after 48 hours for D. ciliatus and 100% after 24 & 48 hours for B. zonata. LC50 was 1.404 and 1.361 ml/l., LC90 was 2.230 and 2.238 ml/l. after 24 hours. Also LC50 was 0.934 and 0.986 ml/l., LC90 was 2.712 and 1.470 ml/l. after 48 hours for both tested flies, respectively. The slope values were 6.351 and 7.360 after 24 hours, 3.971 and 6.466 after 48 hours for D. ciliatus and B. zonata, respectively. Furthermore Bactrocera zonata was more susceptible than Dacus ciliatus to El-Oshar extract, toxicity index was 96.63% and 100% after 24 hour and 94.72% and 100% after 48 hour for Dacus ciliatus and Bactrocera zonata, respectively.