journal of al-qadisiyah for pure science(quarterly)

Abstract

The aim of this study is to know the active influence of some extracts plants which include the
extraction of Monterey cypress leaf, Christs thorm , Eucalypts and Oleander in four different
concentration in every extraction plant 10%, 20%, 30%, 40% for control Fusarium oxysporum fungus
caused root rot cucumber disease . The results appear that all the extraction plants which are used
made a inhibition in the growth rate of the fungi . The 40% concentration is more efficiency ,the
growth rate is 4, 3.75 , 2.75 ,2.12 Cm respectively and the inhibition rate is 52.94%, 55.88%,
67.64%,75.05% respectively. compared to the control treatment (F.oxysporum only) was growth rate
8.5cm. The most actively plant to reduce the growth of the fungi is the extraction of Oleander plant in
the 40% concentration which made the inhibition rate 75.05%. The lowest rate of concentration to
reduce the growth of the fungi is 10%.The inhibition rate is 25.05%,23.52%,28%,51.52%respectively.