Research of different pesticide treatment on controlling the root disease of Astragalas mongholicus

In this research, three main pesticides(Hymexazol, thiophanatemethyl and Gaucho+Rui Miaoqing) were tested to looking for better agricultural chemicals for Astragalas mongholicus root tot diseases. The results showed that the most effective pesticide is Gaucho+Rui Miaoqing(22 512+24 012 g·ha-1) which controlling effect is 32.21%. and the less effective pesticide is thiophanatemethyl (502.5 g·ha-1) and the least effective pesticide is Hymexazol(700.5 g·ha-1) which controlling effect is -0.07%. All of these three different pesticide have some effect on controlling A.mongholicus root tot diseases although the effects are not obvious.