Control Efficiency of Different Soil Disinfectants on Two Kinds of Soil-borne Diseases of Sweet Potato
QIAO Yan
DONG Jie
WANG Pinshu
YANG Wuqun
ZHANG Shengju
YANG Jianguo
Abstract：Sweet potato root-rot disease and stem nematode disease were two important diseases,which could lead to total loss of yields.In order to find effective pesticides for preventing and treating the two diseases simultaneously,a trial was carried out in the field in Daxing district,Beijing.Five soil disinfectants were chosen to investigate their control efficiency on root-rot disease and stem nematode disease,and the yield of sweet potato was also determined.The results showed that 98％ Mylone MG had a relatively better control effect on root-rot disease and the efficiency was 46.23％.The efficiencies of other disinfectants were between-5.92％ and 29.08％.Tubingxiao WP(Bacillus subtilis) had a best control effect on stem nematode disease and the efficiency could be up to 87.79％.The disease incidence and disease index in other disinfectant treatments had no significant differences from Tubingxiao treatment,and their efficiencies were between 56.67％ and 80.35％.Mylone had a significant increasing effect on sweet potato yield,and the yield was 23 491.80 kg/ha.Compared to the blank control,the percentage of yield increase was 35.33％.The increasing effects on sweet potato yield of other disinfectants were between-31.59％ and 20.77％.So it is suggested that Mylone should be used before planting,to decrease the effect of these two diseases on sweet potato yield.
Keywords：sweet potatoroot-rot diseasestem nematode diseasesoil disinfectioncontrol efficiency
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 92-95 )