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Studies on the Antifungal Activity of Seven Herbs on Plant Pathogen

WU Xin-an,HUA Ri-mao,YUE Yong-de,WU Xiang-wei,YANG Xiao-fan (Department of Plant Protection,Anhui Agricultural University,Hefei 230036)  
Seven kinds of herbs were screened on the three plant pathogen Venturia inaequalis,Fusarium oxysporum f.sp. lycopeersici,Colletotrichum gloeosporioides.The results showed that the extract of Cnidium monnieri and Polygonum cuspidatum had strong antifungal activity on the Colletotrichum gloeosporioides and Fusarium oxysporum f.sp.lycopeersici,the EC 50 of which were 0.8046 g/L and 0.3877 g/L respectively on the Colletotrichum gloeosporioides in 72 h,but 0.8817 g/L and 0.44693 g/L on the Fusarium oxysporum f.sp.lycopeersici.
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