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Screening of Seed Treatment Fungicide for Control of Damping-off caused by Rhizoctonia solani on Panax ginseng
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 Title & Authors
Screening of Seed Treatment Fungicide for Control of Damping-off caused by Rhizoctonia solani on Panax ginseng
Shin, Jeong-Seop; Lee, Seung-Hwan; Cho, Hye-Sun; Cho, Dae-Hui; Kim, Kyoung-Ju; Hong, Tae-Kyun; Park, Chol-Soo; Lee, Seong-Kye; Jung, Hee-Young;
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Damping-off is a critical disease on ginseng seedling, which caused by the fungal pathogen Rhizoctonia solani. The disease has been prevented by tolclofos-methyl for the last 20 years. However, the tolclofos-methyl usually detected on the harvested roots of 6-year-old ginseng. Herein, we tried to select an alternative pesticide which not only must be safe but also efficiently inhibits the fungal pathogen. Four fungicides (fludioxonil, flutolanil, pencycuron, and thifluzamide) were applied to their inhibition efficacy against the pathogen. In in vitro test, fludioxonil treatment showed 80% inhibition activity for 25 days. Thifluzamide and flutolanil showed the activity for 10 days. Pencycuron showed for 1 days. In addition, the fludioxonil was more effective to control the pathogen comparing to other three fungicides in field. The incidence of damping-off was reduced to 71% by fludioxonil treatment. The level of the fungicide residue in seedling was 0.44 mg/kg, which value will be a negligible level in final products after 5 years. Consequently, the fludioxonil is a conceivable alternative for tolclofos-methyl to cope with R. solani.
Damping-off;Fludioxonil;Panax ginseng;Rhizoctonia solani;Seed treatment;
 Cited by
Cho, D. H., J. Y. Kang and Y. H. Yu (2004) Anastomosis group, pathogenicity and growth characteristics of Rhizoctonia solani causing damping off on Panax ginseng. Korean J. Ginseng Res. 28(4):183-190. crossref(new window)

Cho, D. H. and Y. H. Yu (2005) Effect of fludioxonil, flutolanil, and thifluzamide on suppression of damping-off caused by Rhizoctonia solani on Panax ginseng. Korean J. Ginseng Res. 29(4):185-191. crossref(new window)

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