دراسة التأثير المانع في وضع البيض لبعض المستخلصات النباتية المائية عند إناث عثة البندورة Tuta absoluta (Meyrick, 1917)‎ (Lepidoptera: Gelechiidae)‎

Abstract EN

The purpose of this study was conducted to evaluate the aqueous extracts of leaves Nerium oleander L, Laurus nobilis L and Olea europea L in oviposition detering of moth tomato females Tuta absoluta, to reduce its spread as those extracts contain several chemical compounds, its being clean pesticides.

The aqueous extracts of leaves Nerium oleander L, Laurus nobilis L and Olea europea L were prepared in different concentrations with water (2%, 4%, 6%, 8% and 10%).

The results showed that the aqueous extracts of leaves N.oleander L and L.

nobilis L had oviposition deterrent at the rate of 100% at concentrations 8% and 10%, while the aqueous extract of leaves O.

europea L showed oviposition deterrent at the rate of 100% at concentration 10% and 90.57% at concentration 8%.

All extracts show relatively less effect at the lowest concentrations.

The results showed a potential to reduce the moth tomato reproduction by using aqueous extracts of leaves N.oleander L, L.

nobilis L and O.

europea L as a natural resource for developing safe and environment friendly pesticides.