Biological activity of some aqueous plant extracts against Vanessa cardui Linnaeus (Lepidoptera: Nymphalidae)

Abstract

Laboratory experiment carried out in Directorate of Diyala Agriculture, plant pathology Lab during 2016. Aqueous extracts of three plants, namely Neem (Azadirachta indica), Nerium (Nerium oleander) and Eucalyptus (Eucalyptus sp) with insecticide (Confidor 200 SL) were tested against caterpillars of Vanessa cardui in plastic Jars. Neem and confidor were reduced the larval population about (83.3, 83.3%), (100, 96.6%) and (100,100%) after 14,21and 28 days respectively also Neem, confidor and Nerium were decreased the days to arrival 100 percent of mortality after (21, 28 and 35 day) respectively.