Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Changes in the Nutrient Components Associated with the Growth of Lettuce in Circulating Hydroponics

순환식 양액재배에서 상추의 성장에 따른 양액성분의 변화

  • 김동석 (대구가톨릭대학교 환경과학과) ;
  • 박영식 (대구대학교 기초교육대학)
  • Received : 2015.02.01
  • Accepted : 2015.05.28
  • Published : 2015.08.31
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Abstract

This study was conducted to investigated the changes in the nutrient components ($NO_3{^-}-N$, $NH_4{^+}-N$, $PO_4{^{3-}}P$, $K^+$, $Ca^{2+}$, and $Mg^{2+}$) and environmental parameters (electrical conductivity, total dissolved solids and pH) on the leaf lettuce (Lactuca sativa L.) grown with hydroponics. Recirculating hydroponic cultivation system was consisted of planting port, LED lamp, water tank, and circulating pump for hydroponic. Nutrient solution was used in the standard solution for Japan vegetables experimental station and commercial hydroponic. The result showed that electrical conductivity (EC), total dissolved solids (TDS) and pH, depending on the growth of lettuce decreased continuously. With the growth of the lettuce, nitrate nitrogen, ammonia nitrogen, phosphate phosphorus were required for periodic replacement. The number of pH compensation due to the growth of lettuce are the most high. The concentration of $Ca^{2+}$ and $Mg^{2+}$ during the lettuce growth showed no significant change. However, $K^+$ concentration increased due to the replacement with nitrogen and phosphorus. Electric conductivity and total dissolved solids with total nutrient concentration showed the linear relationship and the correlation coefficient $R^2$ were 0.8601 and the 0.827, respectively.

Keywords

References

  1. Ahn, T. I., Shin, J. W., Son, J. E., 2010, analysis of changes in ion concentration with time and drainage ration under EC-based nutrient control in closed-loop soilless culture for sweet pepper plants (Capsicum annum L. 'Boogie'), J. Bio-Env. Con., 19(4), 298-304.
  2. Ahn, T. I., Son, J. E., 2011, Changed in ion balance and individual ionic contributions to EC reading at different renewal intervals of nutrient control in closed-loop soilless culture for sweet peppers(Capsicum annum L. 'Fiesta'), Kor. J. Hort. Sci. Technol., 29(1), 29-35.
  3. APHA-AWWA-WEF, Standard methods for the examination of water and wastewater. 19th Ed., APHA, Washington D.C. 1995.
  4. Blog of rural love gardening love, 2008, http://blog.naver.com/rohmy17.
  5. Cho, J. Y., Seo, B. S., Chung, S. J., 2000, Present status and prospect of sterilization of nutrient solution for recycling hydroponics, Kor. J. Hort. Sci. & Technol., 18(6), 890-899.
  6. Kim, H. J., Kim, J. H., Nam, Y. I., 1995, Automatic control of pH and Ec by programmable logic controller in nutriculture of tomato(Lycopersicon esculentum Mill.) J. Bio. Fac. Env., 4(2), 203-210.
  7. Kim, H. J., Woo, Y. H., Kim, W. S., Nam, Y. I., 2000, Problem and optimum control of nutrient solution management in closed hydroponics, Kor. J. Hort. Sci. & Technol., 18(6), 884-889.
  8. Kim, K. D., 1998, Management of nutrients in circulating hydroponics, Prot. Hort., 11(1), 55-58.
  9. Kim, Y. C., Kim, K. Y., 2002, Waste utilization technology and government expense sanctions fertilizer salt of hydroponics, Kor. Res. Prot. Hort., 15(2), 20-26.
  10. Lee, Y. B., Roh, M., Y., 1998, Fruit vegetables circulating hydroponics technology, Prot. Hort., 11(1), 29-43.
  11. Lee, S. Y., Lee, S. J., Seo, M. W., Lee, S. W., sim, S. Y., 1999, Reusing techniques of nutrient solution for recycling hydroponics culture of lettuce, J. Bio-Env. Con., 8(3), 172-182.
  12. Park, Y. S., Kim, D. S., 2014, Nutrient composition changes in circulating hydroponic with plant growing, Proceeding of the Kor. Environ. Sci. Soc. Conf., 23, 349-353.
  13. Savvas, D., 2002, Automated replenishment of recycled greenhouse effluents with individual nutrients in hydroponics by means of two alternative models, Biosyst. Eng., 83, 225-236. https://doi.org/10.1006/bioe.2002.0106
  14. Yu, S. O., Choi, K. Y., Jeon, K. S., Bae, J. H., 2006, Development of optimal nutrient solution of Cherry Tomato (Lycopersicone sculentum Mill. 'KoKo') in a closed soilless culture system, J. Bio-Env. Con., 15(1), 54-60.