Background: Electrical conductivity (EC) and pH are important features of nutrient solution, affecting both growth and quality of crops by altering nutrient uptake.
Methods and Results: The pH values of nutrient solutions were controlled at 5.0, 5.5, 6.0, 6.5 and EC values were controlled at 0.68, 0.84, 1.23, 1.41 dS/m. Gingesng root weights were higher during the initial growth period when the plants were treated with low pH and low EC nutrient solutions. However, the higher pH and EC levels, the greater the increase in the rate of root weight between the initial and middle growth periods. The highest ginsenoside amount changed during growth period. The total ginsenoside amount was highest in the root, and the lowest in leaves at 45 and 90 days after treatment, respectively, with solution at a pH of 6.0. After 135 days of treatment, the highest total ginsenoside amount was detected in root treated with soluton with EC values of 1.23 dS/m.
Conclusions: For the cultivation of ginseng using a nutriculture system, the pH and EC values of nutrient solutions should to be controlled based on the stage of growth and targeted plant organ (root or leaves).

서 언
 재료 및 방법
  1. 실험재료 및 처리
  2. 상토 화학성 분석
  3. 식물체 분석
  4. Ginsenoside 분석
  5. 통계처리
 결과 및 고찰
  1. 배양액의 , EC에 따른 인삼의 지상부 및 지하부 생육특성
  2. 배양액의 pH, EC에 따른 인삼의 진세노사이드 함량 특성
 REFERENCES

• 유진(농촌진흥청 국립원예특작과학원 인삼특작부) | Jin Yu Corresponding author
• 장인배(농촌진흥청 국립원예특작과학원 인삼특작부) | In Bae Jang
• 서수정(농촌진흥청 국립원예특작과학원 인삼특작부) | Soo Jung Suh
• 권기범(농촌진흥청 국립원예특작과학원 인삼특작부) | Ki Bum Kweon