Effect Of Some Saharan Asteracea Extrats (launaea Arboresens & Warionia Saharae) Against Cyst Nematode (globodera Sp)

In vitro evaluation of Launaea arboresens and Warionia saharae extracts toward the hatching of cyst nematodes ( Globodera sp.) eggs, showed that the majority of the tested extracts present an variable nematicidal activities which increases significantly with the exposure time and aqueous or organic extracts. The ethanol extract of Launaea arboresens and ketone extract of Warionia saharae have very high nematicidal activity, with mortality rate respectively 80% and 57%.