Biological Activity and Field Control Effects of Several Fungicides against Buckwheat Stem Canker by Rhizoctonia spp.
Buckwheat stem canker is an important disease affecting yield and quality of buckwheat.The biological activity of Rhizoctonia spp.against stem canker of buckwheat was determined by using common fungicides.Biological activity assay results showed that flusilazole 40％EC,fludioxonil 25 g/L FS,triadimefon 15％WP and Thiram·Seedvax 40％WP had obvious inhibitory effects,and the inhibitory rate of flusilazole 40％EC at 500 μg/mL was 89.7％,and EC50 was 1.56 μg/L.In field control tests,azoxystrobin 250 g/L SC at dosage 675-855 mL/ha,flusilazole 40％EC at dosage 150-375 mL/ha,pyraclostrobin 250 g/L EC at dosage 570 mL/ha,Thiram·Seedvax 40％WP at dosage 0.15-2.85 g/ha and fluazinam 50％SC at dosage 375-480 mL/ha had better control effects,increased production and net profit obviously.Azoxystrobin,Thiram·Seedvax,pyraclostrobin,flusilazole and fluazinam can be used to control the buckwheat stem canker disease during production by passing them down ditches.
BuckwheatBuckwheat stem cankerRhizoctonia spp.Biological activityChemical control
万方数据
维普
