Abstract

A laboratory experiment was conducted to evaluate the effect plant extracts water allium Sativum ,Thevetia nerifolia, Eucalyptus camaldulensi and Punica gramatumat two concentrations 40% and 60%. The results showed that all plant extracts by concentration of 60% gave the highest effect, whereas high inhibition effect of Allium sativumat concentration of 60% was about 94.5% for F. oxysporium f.sp .lycopersici and about 92.6%Macrophomina Phaseolina, where less inhibition effect of Punica gramatum at concentration of 40% about 61.2% for F. oxysporium f.sp .lycopersici ,and Thevetia nerifoliaat concentration of 40% was the less inhibition effect, about 84.8% for M. phaseolina (Tassi) Goidcompared with the control.