Inhibitory effect of metalaxyl on soybean root rot pathogens

Inhibitory effects of 35% fine metalaxyl seed treatment emulsion on soybean root rot pathogens were determined by mycelium growth inhibition in the laboratory,the effects of generation of oospores and seedling pot control test.The results showed that the inhibition rate of 35% fine metalaxyl seed treatment emulsion on Rhizoctonia solani,Pythium aphani dermatum,Phytophthora sojae were 100%,100%,and 84.82%,respectively in the laboratory.35% fine metalaxyl seed treatment emulsion inhibited the generation of oospore of Pythium aphani dermatum and stimulation the generation of oospores of Phytophthora sojae.The control effect of 35% fine metalaxyl seed treatment emulsion on Fusarium oxysporum,Rhizoctonia solani,Pythium aphani dermatum,Phytophthora sojae were 70.93%,65.63%,63.71%,and 76.54%,respectively in seedling pot control test and was higher than control agents.