The Effective Fungicide Election And Evaluation To Alfalfa Damping-off

This text studied Rhizoctonia solani hypha fusion group and utilizeTebuconazole,Validamyc,Propiconazole,Difenoconazle,Cerealis,Thiram,Triadimefonset up to the Rhizoctonia solani adopt and growing method carry on room maliciousstrength determine.Study several drug set Rhizoctonia solani influence that hyphagrow against , produce fungus nuclear influence correctly. Study several drug set upwithered prevention and cure result of disease to alfalfa in addition. Among them, 7drug set against Rhizoctonia solani virulence result indicate virulence supreme drugthe Tebuconazole .It is for 0.056224 μg·ml-1; the lowest virulence is Cerealis.Its EC50is for 1.166154μg·ml-1. Rhizoctonia solani strain can melt with standard bacterialstrain AG-4 gregarious to merge each other.Prove fungus this belong to and set upAG-4, HJ-Ⅱof fungus, Tebuconazoleset against Rhizoctonia solani hypha itgrows to be best to suppress result, the lowest is Ceraelis. Tebuconazole set againstRhizoctonia solani produce fungus nuclear result best influence, the lowest isCerealis. 40% Tebuconazole WP dilute 500. 25% Propiconazole EC dilute 1000, 60%efficacious WP dilute 1000 times. Set up to Rhizoctonia solani may up to the bestprevention and cure result. Establish the new extending projection ofTebuconazole,and the application on farm had good anticipate result.