Cyazofamid Complexes With Methiadinil To Prevent Clubroot Disase Of Cruciferous Crops

Clubroot of cruciferous crops is a cosmopolitan soil-borne disease with contagious, spread fast and so on. It is imperative to choose an integrated or a relatively integrated way to prevent clubroot of cruciferous crops, Since a single control methods on control effect is not very significant.10% cyazofamid SC and 25% methiadinil SC in different complex concentrations as test material to prevent clubroot of cruciferous crops. Control effects of different proportion concentration were evaluated scientifically and analysised comprehensivly, the following results were obtained:1. The effect of cyazofamid SC and methiadinil SC in different concentrations on potted pakchoi clubroot disease.Confection (c) took a better function on incidence?disease index?control effect and shoot fresh weight of potted pakchoi clubroot disease compare with a (10% cyazofamid SC) and b (25% methiadinil SC).The result shows confection treatment is better than single treatment on preventing potted pakchoi clubroot disease.Treatment c incidence 16.45%?disease index 8.5?control effect 88.77% and fresh weight 4.57g?2. The effect of cyazofamid SC and methiadinil SC in different concentrations on preventing pakchoi and rapeseed clubroot disease in the field.2.1 The effect of preventing pakchoi clubroot disease in Dayi.The effect of 10% cyazofamid SC and 25% methiadinil SC in different concentrations on preventing pakchoi clubroot disease showed:incidence I>B>F>H>E>A>G>C> D; disease index I>B>F>H>E>A>C>D>G; control effect G>D>C>A>E>H >F>B; root length C>D>E>F>A>G>B>H>I; height A>C>D>F>E>H>G > B> I; shoot fresh weight F>C>E>D>G>H>A>B>I. According to the comprehensive analysis significantly of different proportion of pakchoi clubroot disease indexes and physiological traits, G (cyazofamid 30mg/L+methiadinil 200mg/L) is the best treatment in Longqiao village,Wangsi, Dayi, it's incidence 8.00%. disease index 3.83, control effect 92.46%, root length 7.62cm, height 22.71cm and shoot fresh weight 207.7g.2.2 The effect of preventing rapeseed clubroot disease in Shifang.The effect of 10% cyazofamid SC and 25% methiadinil SC in different concentrations on preventing rapeseed clubroot disease showed:incidence I>B>A=F>D=E>C>H >G; disease index I>B>F>E>A>D>C>H>G; control effect G>H>C>D>A> E>F>B; According to the comprehensive analysis significantly of different proportion of pakchoi clubroot disease indexes and physiological traits, G (cyazofamid 30mg/L+methiadinil 200mg/L) is the best treatment in Shuangshi village,Majing, Shifang, it's incidence 2.00%, disease index 0.67 and control effect 98.63%.2.3 The effect of preventing direct-seeding rapeseed clubroot disease in Guanghan.The effect of 10% cyazofamid SC and 25% methiadinil SC in different concentrations on preventing direct-seeding rapeseed disease showed:incidence I>B>H>F>E>D>G >C>A; disease index I>B>F>H>E>D>A>G>C; control effect C>G>A>D> E>H>F>B; root length C>A>D>E>G>F>H>B>I; height C>H>D>E>A> G> F> B>I. According to the comprehensive analysis significantly of different proportion of pakchoi clubroot disease indexes and physiological traits, C (cyazofamid 50mg/L+methiadinil 125mg/L) is the best treatment in Liyan village,Xigao, Guanghan, it's incidence 41.65%, disease index 22.33, control effect 71.40%, root length 7.94cm and height 44.18cm.