تقييم الفعالية السمية لمستخلصات اوراق بعض االنباتات ضد حشرة من الدفلة Aphis nerii.

Abstract

Study was conducted to evaluate the toxic activity of the aqueous extracts to Lantana camara, Eucalyptus camaldulensis, Euphorbia helioscopia, Clerodendrum inerme and Nerium oleander leaves against Aphis nerii on Nerium oleander.Three different concentrations %0, %50 and %100 for each extract. The treatment was consisted extracts (sprays). Results showed that Eucalyptus camaldulensis extract was high toxicity against Aphis nerii after 24 hours sprays, the percentage of aphid mortality reached 100%. The lowest result extract was to Nerium oleander the percentage of aphid mortality reached after 48 hour to 88%.phenolic, steroid,tanin,coumarin, essensial oil, glycoside,terpenes resins and saponin were detected in different leaves