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인삼 연작지에서 관수 및 인삼분말 첨가에 따른 뿌리썩음병 발생 특성

Growth and Root Rot of 2-Year-Old Ginseng by Irrigation Treatment and Soil Incorporation of Ginseng Root into Soil Infected with Root Rot Pathogens

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한국약용작물학회 (The Korean Society of Medicinal Crop Science)
초록

Background : Ginseng root rot caused by soil-borne pathogens, Cylindrocarpon destructans and Fusarium solani, is a major factors of replanting failure in ginseng cultivation. Some of the phenolic compounds detected in the soil of commercially cultivated American ginseng could inhibit the seed germination and seedling growth of American ginseng. Our study is to investigate the causes of replanting failure of ginseng by overhead flooding treatment and soil incorporation of ginseng fine root in soil infected with root rot pathogens. Methods and Results : To make soil occurring continuous cropping injury, 2-year-old ginseng infected with Cylindrocarpon destructans replanted in soil cultivated ginseng for 5 years. Treatment are as follows: 1) control, 2) water of 2ℓ was irrigate infected soil of 20ℓ, 3) ginseng fine root of 20g was mixed with infected soil of 20ℓ. Soil pH was increased, while other inorganic components were significantly reduced by overhead flooding treatment. Soil incorporation of ginseng fine root decreased soil pH, but increased EC, NO3, P2O5 and K, meanwhile, did not affected changes in organic matter, calcium, magnesium, sodium. Irrigation treatment in soil occurring replanted failure promoted distinctly above-ground growth of ginseng, and inhibited the occurrence of root rot because inorganic nutrient like NO3, P2O5 and K were decreased to optimal levels, and the density of soil pathogens could be reduced. Growth of ginseng was not inhibited, while root rot was promoted by soil incorporation of ginseng fine root. Conclusion : Irrigation treatment was effective in promoting the growth of ginseng and inhibited root rot distinctly. Ginseng fine root remaining in the soil after ginseng harvest did not affect the above-ground growth of ginseng, while promoted the occurrence of root rot.

저자
  • Sung Woo Lee(Ginseng Research Division, Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, RDA) | 이성우 Corresponding author
  • Kyung Hoon Park(Ginseng Research Division, Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, RDA) | 박경훈
  • Seung Ho Lee(Ginseng Research Division, Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, RDA) | 이승호
  • In Bok Jang(Ginseng Research Division, Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, RDA) | 장인복
  • Jin Mei Lan(Ginseng Research Division, Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, RDA)
  • Dong Yun Hyun(Ginseng Research Division, Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, RDA) | 현동윤