Korean Journal of Medicinal Crop Science (한국약용작물학회지)

The Korean Society of Medicinal Crop Science (한국약용작물학회)
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Soil Chemical Properties, Microbial Community and Ginseng Root Rot in Suppressive and Conducive Soil Related Injury to Continuously Cropped Ginseng

인삼 연작장해 유발토양과 억제토양의 화학성, 미생물상 및 뿌리썩음병 발생 특성

  • Lee, Sung Woo (Department of Herbal Crop Research, NIHHS, RDA) ;
  • Lee, Seung Ho (Department of Herbal Crop Research, NIHHS, RDA) ;
  • Seo, Mun Won (Department of Herbal Crop Research, NIHHS, RDA) ;
  • Jang, In Bok (Department of Herbal Crop Research, NIHHS, RDA) ;
  • Kwon, Ra Yeong (Department of Herbal Crop Research, NIHHS, RDA) ;
  • Heo, Hye Ji (Department of Herbal Crop Research, NIHHS, RDA)
  • 이성우 (농촌진흥청 국립원예특작과학원 인삼특작부) ;
  • 이승호 (농촌진흥청 국립원예특작과학원 인삼특작부) ;
  • 서문원 (농촌진흥청 국립원예특작과학원 인삼특작부) ;
  • 장인복 (농촌진흥청 국립원예특작과학원 인삼특작부) ;
  • 권나영 (농촌진흥청 국립원예특작과학원 인삼특작부) ;
  • 허혜지 (농촌진흥청 국립원예특작과학원 인삼특작부)
  • Received : 2020.03.11
  • Accepted : 2020.04.20
  • Published : 2020.04.30
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Abstract

Background: Suppressive soil inhibits soil-borne diseases if pathogens are present, and ginseng does not show injury even if replanted in the same field. Methods and Results: Soil chemical properties and microbial community of soil were investigated in soil suppressive and conducive to ginseng root rot. Root rot disease in 2-year-old ginseng was tested by mixing conducive soil, with suppressive or sterilized suppressive soil. The root rot ratio in suppressive soil was 43.3% compared to 96.7% in conducive soil. Biological factors acted to inhibit the root rot because disease ratio was increased in the sterilized suppressive soil compared to that in non-suppressive soil. The suppressive soil had lower pH, nitrate nitrogen and sodium than the conducive soil. Dominat bacteria and fungi (more than 1.0%) were 3 and 17 species in conducive soil and 7 and 23 species in suppressive soil, respectively. The most predominant fungi were Pseudaleuria sp. HG936843 (28.70%) in conducive soil and Pseudogymnoascus roseus (7.52%) in suppressive soil. Conclusion: Microbial diversity was more abundant in the suppressive soil than in the conducive soil, and the proportion of pathogens (Nectriaceae sp.) causing root rot was significantly lower in the suppressive soil than in the conducive soil.

Keywords

References

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