Laboratory Co-toxicity of Cyprodinil and Carbamic Acid Complex against Pathogenic Fungi on Five Kinds of Crops
LIU Runqiang
CAO Qianhui
WANG Qingjun
CHEN Xiling
Abstract：The synergistic activity of cyprodinil and carbamic acid complex against Fusarium oxysporum f. sp. Fragariae,Colletotrichum orbiculare (Berk. & Ment. ) Arx,Plasmopara viticola(Berk. et Curtis) Berl. et de Toni, Pythium aphanidermatum ( Edson) Fitzpatrick and Botrytis cinerea Pers,the pathogenic fungi on 5 kinds of crops,strawberry,watermelon,grape,tobacco,and rose,respectively,was studied based on the mycelial growth method in the laboratory. The bioassay results showed that the EC50 values of cyprodinil against 5 fungi ranged from 0. 19 mg/L to 1. 92 mg/L,and the EC50 values of carbamic acid against 5 fungi ranged from 0. 23 mg/L to 1. 02 mg/L. When the ratio of cyprodinil and carbamic acid was 15:1,the co-toxicity cofficient(CTC) against mycelial growth of Fusarium oxysporum f. sp. Fragariae was maximum ( 217 . 70 );When the ratio of the mixture was 8:1 , the CTC against mycelial growth of Colletotrichum orbiculare (Berk.& Ment. ) Arx was maximum(203. 59); When the ratio of the mixture was 3:1,the CTC against mycelial growth of Pythium aphanidermatum ( Edson) Fitzpatrick was maximum (196. 29);When the ratio of the mixture was 1:6,the CTC against mycelial growth of Plasmopara viticola (Berk. et Curtis) Berl. et de Toni was maximum(201. 98);When the ratio of the mixture was 9:1, the CTC against mycelial growth of Botrytis cinerea Pers was maximum ( 202 . 56 ) . The results suggested that cyprodinil and carbamic acid had significant synergistic activity against 5 different fungi when combined by appropriate ratio.
Keywords：cyprodinilcarbamic acidFusarium oxysporumColletotrichum orbicularePythium aphanidermatumPlasmopara viticolaBotrytis cinereasynergistic activity
Publication Date：2016-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 93-97 )